[BidClub_]
Biotech Hangout · · 60 分钟

第195期 - 2026年9月11日

Tess CameronBrian SkorneyPaul MatteisYaron Werber

股票生物医药投资技术
YouTube
TL;DR
  • Lp(a)假说遭遇重创:Novartis/Ionis约8,000名患者的HORIZON研究显示,pelacarsen在将Lp(a)降低约80%的情况下仍“完全阴性”,并于劳动节周末前的周五16:30发布。 Amgen受olpasiran映射影响下跌10%,Brian Skorney的经验法则也不支持“更深度敲低”的辩护:当结局研究对事件发生率建模错误时,研究通常都会失败。Novartis和Amgen都已提示事件发生速度慢于模型。Amgen的数据可能明年公布,Lilly则可能要等到2029年。
  • Novartis在劳动节期间遭遇第二次重击:Avidity的DM1药物在vHOT终点上的3期研究失败,距12亿美元收购还不到1年;随后Artisan Partners发出激进投资者公开信,宣告“派对已经结束”。 该机构的制药团队将销售额预测下调约50亿美元,并将EPS CAGR削减200个基点至4%,而Novartis正面临独家期届满、亟需补充收入。Yaron Werber对交易打法的批评是:12亿美元的交易需要达到“90%、92%命中率的罚球手”水平;在概念验证前,最好以20亿–40亿美元的规模“做6笔交易,而不是1笔”。
  • Avidity失败改善了Dyne的相对格局,但技术路线、剪接纠正和vHOT仍存在未解问题。 Skorney表示,Avidity尚未展示有说服力的剪接纠正证据,而Dyne报告的CASI-22剪接纠正幅度约为安慰剂校正后的25%。Matteis对技术路线的判断是,有毒的DMPK RNA“卡在细胞核里”;siRNA所描述的机制发生在细胞质,而ASO在SMA等细胞核靶点上已经取得成功。Dyne更一致的vHOT数据和更大的剪接影响使其“有机会”,扩展队列数据预计明年初公布。
  • FDA领导层相对稳定:Michael Davis正式执掌CDER,Karim执掌CBER——“事情本来有很多种可能变得更糟,却没有多少种可能变得更好”。 在本届政府任内CDER负责人已经更替5次之后,Karim“做指挥家,而不是小提琴手”的姿态,意味着Prasad/Makary时期混乱局面的缓解。一位嘉宾表示,在Compass第四季度滚动递交NDA之前,迷幻药的大门看起来“完全敞开”;而Davis此前曾向部分复配药机构发出警告信,复配GLP-1仍是需要关注的政策变量。
  • 心血管药物开发的结构性难度刚刚上升:HORIZON加上ZEUS失败,削弱了围绕Lp(a)和hsCRP的生物标志物捷径,而这些捷径原本可能帮助规模较小的biotech为心血管结局试验融资。 Werber认为,试验人群如今控制得太好——HORIZON的平均LDL约为60–65——历史流行病学已无法准确预测事件发生率。尽管如此,Amgen和Lilly仍在继续或扩大Lp(a)结局项目。
  • 亮点包括:Roivant吸入式sGC药物治疗PH-ILD,使PVR下降56%,6分钟步行距离增加36米,并在第48周向50米靠拢;在适度渗透率下,已对应约25亿美元销售机会,3期研究也已启动。 Pharvaris的口服HAE预防疗法将发作率降低超过80%,BioCryst约为45%。Structure首个口服amylin临床数据则显示,单次10毫克给药后体重下降3.3%,但更高剂量下的恶心和呕吐让此前被抬高的预期落空。
  • 宏观因素重新成为变量:美国—伊朗战争期间Brent突破108美元,10年期美债收益率逼近5%,XBI下跌略超3%;但Skorney的框架是,真正重要的是趋势,而不是小幅波动。 Biotech对25个基点的变化并不特别敏感,风险在于100个基点量级的升级。如果最终只有1次或2次加息,“那就会是小题大做”。
摘要 · 为研究而整理的核心内容

1. 利率重新成为生物科技的宏观驱动因素——但只有大幅波动才重要

  • Tess Cameron的切入点是:开学季首周表现艰难,XBI下跌略超3%;更广泛的抛售则与美国—伊朗战争期间Brent原油突破108美元,以及10年期美债收益率先触及4.8%、周四又逼近5%有关。生物科技跌幅大于标普500,但小于科技股占比较高的Nasdaq。她的问题是,在经历由政策驱动的2024年之后,利率是否重新成为影响整个板块的驱动因素。
  • Skorney的框架是,板块并不特别敏感于“这里变动25个基点、那里变动25个基点”。真正的危险,是在1—2年内出现100个基点级别的上行。联邦基金利率走向高个位数将“非常糟糕”,走向零则“非常好”。在通胀重新成为主题、且特朗普任命的主席看起来比参议院确认听证时更偏鹰派的情况下,关键在于趋势。如果最终只有1次或2次加息,“那就会是小题大做”。

2. Davis执掌CDER、Karim执掌CBER:FDA相对稳定

  • Skorney回顾称,CDER和CBER长期以来基本不受政治影响,负责人任期接近终身:Janet Woodcock于1994年至2020年领导CDER,Peter Marks则于2016年至2025年任职CBER。在新政府任内,CDER负责人已经更替5次;Makary/Prasad时期则出现混乱、高管离职、内部不满,以及对指南和决策方式的质疑。Vinay Prasad和Marty Makary离开后,FDA出现了“相对平静”,但重要的领导层问题仍未解决。
  • Karim所表达的姿态正是行业希望看到的:他希望“像一名指挥家”,而不是“在小提琴手表现不佳时抢过小提琴”。按这一框架,他的职责是领导,而不是亲自接管每个决定。若获得必要票数,专员提名人Heidi Overton看起来也会比前任更具稳定性。
  • Yaron转述Provision Policy的Mike McMahon称,留任Davis和Karim是“相当不错的结果”:“事情本来有很多种可能变得更糟,却没有多少种可能变得更好。”Karim可能与CBER“有一点不太匹配”,但McMahon预计他短期内会稳定该中心。一位嘉宾还表示,Karim曾搭建并领导大型团队,这一背景令其应对CBER的组织挑战更令人放心。

3. 影响解读:迷幻药看起来通道敞开,复配GLP-1仍有争议,中国政策值得关注

  • 一位嘉宾表示,FDA对迷幻药的通道看起来“完全敞开”。最终版开发指南总体上与Compass、Definium及其他公司的项目一致,包括12周主要终点、重复给药,以及尽最大努力缓解功能性盲法破坏。Davis近期的一篇文章据称也重申了类似观点。Compass预计将在第四季度完成滚动递交NDA。
  • 投资者仍在追问,迷幻药项目是否会面临FDA咨询委员会审查,或长期受到功能性盲法破坏问题困扰。Definium的下一项试验还引出了另一个问题:其低剂量究竟有多接近亚治疗剂量,以及这一点有多重要。总体判断是,FDA领导层看到了精神科领域未满足的需求,并对这一药物类别抱有积极态度。
  • 关于复配GLP-1,Davis此前强调过两点:了解患者实际服用的是什么,并确保患者自己也清楚这一点。据发言人回忆,他曾参与向数家复配药机构发出警告信,使这一领域成为另一个充满争议的政策观察点。
  • Cantor会议的中国主题讨论嘉宾包括ORI合伙人、BIO的John Crowley、Venrock的Ken Song,以及本播客的一位嘉宾。Crowley谈到,未来几个月内可能会出现新的指南,或至少对政策行动形成更清晰的理解。BIO的立场是,美国必须密切关注中国并提升自身竞争力,但直接实施禁令可能无法带来预期结果。本次讨论的规模也远大于去年的中国主题讨论,后者只是在会议侧面的一个小房间内举行。

4. HORIZON失败:pelacarsen与Lp(a)假说

  • Werber复盘称,市场等待已久的约8,000名患者HORIZON研究结果,在劳动节周末前的周五16:30公布;“你立刻就知道这份数据不是积极结果。”Pelacarsen将Lp(a)降低约80%,但在一个控制极佳、平均LDL约为60–65的人群中,研究“完全阴性”。在Lp(a)结果和随后Avidity的负面消息公布后,Novartis股价下跌约14%;Ionis起初只出现渐进式下跌,因为市场此前已基本预期3期结果为负。
  • Werber的团队原本在准备一篇重磅分析,但在意识到大量历史证据来自LDL极高的人群、而较新且控制更好的数据暗示Lp(a)可能没那么重要后,将文章暂时搁置。这是一项二级预防研究。Amgen的olpasiran和Lilly的项目将Lp(a)降低约95%–100%,高于pelacarsen约80%的幅度,因此更深度的敲低能否改变结局,仍是开放问题。
  • Skorney重点讨论了对Amgen和Lilly的映射影响:Amgen周二下跌10%。由于遗传性Lp(a)升高可能影响约1/5人口,许多泛化投资者此前被这一主题吸引。但他的经验法则仍然成立:“当结局研究对事件发生率建模错误时,我的经验通常是研究会失败。”Novartis表示事件发生速度慢于模型,Amgen也作出过类似观察。将卒中纳入MACE、基线Lp(a)水平等试验设计变量可能有影响,但他很难对药物降低Lp(a)能够实质性改善心血管结局抱有太大信心。Amgen的数据可能明年公布,Lilly则可能要到2029年。
  • Matteis提出,若为了单独观察Lp(a)而将血压和胆固醇强行控制在较低水平,是否反而制造了另一个问题:当其他风险得到管理后,Lp(a)可能并不是一个很大的残余风险因子。Skorney同意,不同研究发生在不同背景下,不能彻底否定Lp(a)假说。他提到自己曾改变对β淀粉样蛋白药物的看法,但表示这次的差异看起来不足以让他期待积极结果。
  • Werber和Tess总结出的更广泛开发教训是:HORIZON人群的风险控制程度很高,使得基于历史流行病学估算统计效能变得困难,因为历史事件发生率可能无法预测现代试验中的事件发生率。Amgen约8个月前启动了一项大型一级预防研究;尽管观察到事件发生速度变慢,Lilly仍将其Lp(a)一级/二级预防研究规模扩大了近1倍。Novartis还有一项每年给药1次的Lp(a)疗法正在走向关键性研究,但前景仍不确定。
  • 再加上ZEUS失败及其对hsCRP的影响,这一结果进一步削弱了这样一种希望:生物标志物可以把小型biotech的资本成本降到足以为心血管结局试验融资的水平。Tess的结论是,心血管药物开发“真的很难”,需要更多时间才能确认治疗效果。

5. Avidity的DM1 3期失败——Dyne的相对格局改善

  • 负责覆盖Dyne的Skorney表示,Avidity研究失败引出了两个问题:DMPK能否在肌肉中有效敲低,以及vHOT是否是正确终点。Avidity曾在患者中展示DMPK降低,并在2期研究中看到一些vHOT获益,但Skorney表示,尽管血液检测显示DMPK被敲低,他始终没有看到有说服力的剪接纠正证据。Dyne报告的CASI-22剪接纠正幅度,安慰剂校正后平均约为25%。
  • 这次失败尤其重要,因为Novartis在不到1年前以120亿美元收购Avidity,并将DM1项目包装为核心资产;公司当时的一页幻灯片显示,最大潜在峰值销售额约为60亿美元。Novartis暗示,亚组分析或次要终点分析中可能有值得关注的内容,但仍需完整数据才能判断。
  • 生物学和测量层面仍有大量问题。CASI-22尚未完全标准化,检测存在变异性;DMPK测量也无法区分突变转录本和野生型转录本。核心临床问题是:vHOT是否在患者、时间段或研究条件之间存在过大异质性,以至于无法稳定显示功能获益;或者是否需要在更长时间范围内使用不同终点。
  • Matteis的技术路线判断是,siRNA在包括TTR在内的头对头数据中通常优于ASO,但DM1可能有所不同。有毒物质是“卡在细胞核里的DMPK RNA”;siRNA最初被描述为作用于细胞质,而ASO在SMA等细胞核靶点上已经取得成功。如果某个构建体在细胞质中的活性更强,它也可能敲低更多健康的DMPK转录本。
  • Matteis仍然相信Dyne“有机会”。Dyne的vHOT数据在不同队列之间看起来更一致,剪接影响也更大。如果Dyne成功,竞争格局可能从一家跟随Avidity、寻求加速批准的后来者,转变为潜在领先者。Dyne扩展队列数据预计明年初公布;Novartis完整数据集可能在几周后于日本举行的WMS会议上展示。

6. Artisan来信与M&A打法之争

  • Werber表示,Artisan Partners质疑董事会对收购交易的监督,主张提升董事会人才质量并设立收购委员会,推动将薪酬考核从剔除收购相关减值的调整后指标中移开,宣告“派对已经结束”,并批评董事长。其他股东也质疑部分交易,另一些股东则认为这些交易仍处于正常的开发成功概率范围内。Novartis表示其战略不会改变。
  • 该机构的制药团队从模型中删除了约50亿美元销售额,将长期EPS CAGR下调约200个基点至4%。调整发生之际,Novartis正面临独家期届满,需要新的收入来源。相较Novartis通常偏好的50亿美元或以下补强型收购,Avidity的规模也异常庞大。
  • Werber的交易打法是:一笔20亿–40亿美元、发生在概念验证前的交易,其成功概率应更像三分射手,约为35%–40%;而一笔120亿美元的交易,则需要接近90%–92%命中率的罚球手。公开披露的峰值销售额估计往往被高估:没有人会说“我们按峰值销售额的10倍来支付”,交易通常会被描述为峰值销售额的3倍,但前提是采用激进的收入预测。他的建议是“做6笔交易,而不是1笔”,接受其中也许只有2笔能以超预期方式成功。
  • 他还强调,大型制药公司并没有一份无限长、随时愿意出售的目标清单。“结婚时,你可以娶自己想娶的人;做交易时,你有时最终买到的只能是你买得起、也买得到的人。”有吸引力的公司可能在需要的时间点不愿出售,或不接受目标估值;任何交易都必须同时获得研发、财务、战略、临床、监管和董事会层面的共识。
  • Skorney表示,大型制药公司普遍面临独家期届满压力,正推动生物科技迎来最好的M&A年份之一;但Avidity的结果可能促使公司转向风险更低的收购,即便这意味着为处于商业化早期或3期之后的收入支付溢价。Matteis补充称,DM1是一种神经系统疾病,终点具有主观性;继Cerevel/AbbVie之后,如果Karuna与Bristol合作的ADEPT研究也出现阴性结果,开发阶段的神经系统交易可能尤其难以出售。
  • Tess描述了一种可能的杠铃结构:交易要么足够去风险,要么足够早、足够便宜,失败时也能承受。在回应Matteis关于私营公司竞购的问题时,她表示,报价是真金白银,必须认真对待;但董事会也必须将其与现实可行的独立发展路径进行权衡,并增强管理层对投资者联盟的信心。“每一种情况下,都存在一个能让交易成立的价格。”

7. Roivant的PH-ILD意外:数据积极,3期已经启动

  • Werber重点介绍了Roivant每日1次吸入式可溶性鸟苷酸环化酶项目。该项目由Bayer授权引入,此前Bayer选择不全面推进这一领域。更早的1b期数据显示出强劲的肺血管阻力获益;约16周的2期研究确认PVR下降56%,并使6分钟步行距离增加36米,而通常需要约30米才具有临床意义。到第48周,获益进一步向50米靠拢。
  • 该研究规模相对较小,6分钟步行距离终点的统计效能不足,这是关键不确定性。与United Therapeutics的Tyvaso不同,Roivant药物不会引发咳嗽;目前双方还在开展联合用药研究。数据公布时3期已经启动,这一意外符合Roivant此前提出的目标,即以快于传统制药公司的速度推进项目。在适度渗透率下,销售额可能达到约25亿美元。
  • Tess表示,市场此前预期极低,因此这是Roivant在执行力强劲的一年中真正的上行意外。公司还将在皮肌炎获批后推出brepocitinib,后续仍有更多催化剂。嘉宾们向CEO Matt Gline及其团队表示祝贺。

8. Pharvaris突围,Biohaven遭遇暂停,Structure低于预期

  • Matteis表示,Pharvaris终于为口服HAE预防药物交出了极具竞争力的疗效数据:发作率降幅超过80%,而BioCryst首款口服预防药物约为45%,Takeda的Takhzyro约为90%。市场接下来要判断的是,患者会如何在每日口服和最少每6个月注射1次之间做选择。数据公布后,Ionis的跌幅从约2%扩大到可能接近5%。
  • Biohaven的KV7癫痫项目因一种大鼠代谢物而被部分临床暂停;目前缺乏足够信息来界定其对人类的风险。Matteis指出,这类问题可能具有重大影响,也可能最终“完全没什么”,此前lumateperone代谢物问题就是例子。更广泛的竞争压力来自Xenon的azetukalner,其疗效和安全性看起来都很强,即使在最低剂量下也是如此。
  • 这次暂停还可能使Biohaven最近与SK Biopharmaceuticals达成的合作复杂化。据报道,SK已与Biohaven讨论是否等问题解决后再完成交割,而Biohaven表示可能在1个月内解决。该交易包含4亿美元首付款,嘉宾们强调,Biohaven不会希望SK退出。
  • Structure Therapeutics公布了首个口服amylin临床数据:单次10毫克给药带来3.3%的体重下降。市场在评估高于预期的减重和耐受性预期时,股价出现抛售;部分更高剂量下的恶心和呕吐发生率较高。尽管如此,这一结果仍为公司在口服GLP-1之外增加了另一个口服靶点,相关赛道还包括口服Wegovy和orforglipron。
完整逐字稿
Tess Cameron

You're listening to Biotech Hangout, a live and unedited weekly discussion of all the latest news in our industry with a group of biotech experts and leaders. I'm Tess Cameron, and my co-hosts today are Brian Skorney, Paul Matteis, and Yaron Werber. For more information about our hosts and guest speakers or to listen to the most recent episode, please go to biotechhangout.com. Thanks so much for joining, everyone. We've had an interesting week. It's been a somewhat challenging back-to-school week for the XBI, which is down just over 3% over the past week or so. It's been a pretty challenging tape overall.

There was a significant sell-off in the stock market overall, due to oil prices spiking in the U.S.–Iran war, with Brent crude getting above $108 a barrel. Ten-year Treasuries reached highs they haven't seen in many years—4.8%, and then close to 5% on Thursday. A lot of that was linked to concerns about energy prices, the state of inflation, and the long-term fiscal health of the U.S. economy.

1. Rates Return To Biotech

That obviously has an impact on biotech. Biotech has always been a rate-sensitive sector. We saw biotech decline a bit more than the overall S&P this week, but not as much as the tech-heavy Nasdaq index.

I'm interested in any comments from Brian, Paul, or Yaron. A couple of years ago, we were living in an environment where biotech and rates were very closely linked. Then 2024 was very much a policy-driven year. Are we getting back to rates really being one of the driving macro, sector-level factors?

Brian Skorney

The way I've always characterized it—and maybe this morning, when XBI was up on a hot inflation number, I questioned whether that was right—is that it's not so much rate-sensitive to small up-and-down movements. It's more about whether we're going to see rates escalate in 100-basis-point moves over a year or two.

When you see the federal funds rate going to the high single digits, that's very bad. Going toward zero is very good. But when you're talking about a 25-basis-point change here or there every now and then, you could deal more with fundamentals.

I guess it's not surprising that we're talking more and more about inflation being a theme, and the Fed potentially escalating rates even though Trump has been such a big advocate for lowering rates. His appointed chairman seems to be a little more hawkish than perhaps he was in the Senate confirmation hearings, and maybe that's a little bit of a break with Trump himself.

I think there is that theme. Inflation is a funny thing, so we'll have to see how much it continues to drive. If we just see 1 or 2 rate hikes, I think this will be much ado about nothing.

2. FDA Leadership Calms Biotech

Tess Cameron

Thank you, Brian. Let's move on to some of the fundamentals. We can start with regulatory policy.

HHS appointments were announced earlier this week for directors of CDER and CBER. HHS announced that Karim is going to keep his place as director of CBER, making a temporary appointment permanent. It also announced that Michael Davis would be selected as director of CDER, also making that appointment permanent.

Those are the 2 main appointments that really have read-through to biotech. There were also appointments for the Center for Tobacco Products and a new appointment as deputy commissioner for technology and artificial intelligence, Jared Seehafer. Brian, could you share any views on these selections and what they mean for biotech?

Brian Skorney

Happy to. I would love to have input from the rest of the group here. Nothing against Jared and Brett, but they probably don't matter in the context of analyzing biopharma. The big names to look at are Michael and Karim.

Over the last, call it, close to a year, the sector as a whole has been breathing a little bit of relief as we've seen the chaos that came with the appointment of Marty Makary as head of the FDA, with Vinay Prasad as head of CBER, and then subsequently as CMO and CSO of the FDA. That's been a lot of chaos.

I was looking back through the history. The CDER and CBER roles have been largely apolitical in nature. They're usually, if not lifetime appointees, longtime bureaucratic appointments. Janet Woodcock served from 1994 through 2020 as head of CDER. Peter Marks didn't do it as long, but he was there from 2016 through 2025, so he must have had a 10-year stint.

Since the new administration, the CDER director has turned over 5 times. CBER leadership has been headlined by Vinay, and we all have a number of opinions on how Vinay ran things. The nicest thing we could say is that there was a lot of chaos and a lot of senior leadership departures.

There seemed to be a lot of discontent within the FDA, and that led to questions about agency guidance and decision-making processes. The industry was struggling with how to work with that FDA leadership.

Since the departures of Vinay and Marty, we've seen a calming. It's a relative calming. I think there are still a lot of questions about whether we've clearly seen the kind of leadership that we saw from Janet or Peter—not necessarily a good thing. I recognize that there are debates about their leadership as well, but compared with Vinay and Marty, there were a lot of issues with them.

I think the nicest thing to hear in the commentary that Karim has made since he was put in the interim position is that he wants to be more of a calming force. He says he wants to be like a conductor; he doesn't want to take over the violin when the violinist isn't doing well. His role is to be the leader, not necessarily the decision-maker.

I think those things speak to how most of the industry wants to see the FDA run. We want to see scientific discourse and groups working together to come to decisions about when a drug should be approved and when it shouldn't be approved.

This is all in the background of the nomination of Dr. Heidi Overton to the role of commissioner of the FDA. It remains to be seen whether she'll be able to secure the needed votes, but she appears to be more of a stabilizing force than her predecessor.

These are all certainly steps in the right direction for the industry relative to what we had a year ago. There are still a lot of open questions because we haven't seen a ton of direct actions taken by the people who are now in these positions. At least from what has been said, the general feeling in the FDA seems to be one of much calmer seas than a year ago.

Yaron Werber

Let me just add that I have to give credit to Mike McMahon, who's one of the founders of Provision Policy and was a dear colleague of ours. Sadly, he wasn't able to join, but I'll pass along some comments.

He believes that the decision to stick with Dr. Davis and Dr. Karim is a pretty good outcome. You can think of many ways this could have gone worse, and not many ways it could have gone better.

Specifically, the decision to stick with Karim for CBER is a good outcome. He's a little bit of an odd fit for CBER director, but given how erratically and poorly Prasad did in that role, McMahon thinks that, over the short term, Karim will do a much better job stabilizing things.

Speaker 4

So, the bottom line is that he felt, net-net, it was more of a positive than not.

Speaker 0

Yeah. Yep, I’d reiterate that. Michael has been a part of several listening sessions and other points at the FDA, and I think is acutely aware of a lot of the organizational challenges that CBER experienced under Vinay and very sensitive to them. So, as someone who was a former operator and had to build and lead large teams, I find it very reassuring to have someone in that role who has a real appreciation for how to do that effectively and how to be a good leader despite maybe having a different background than one may typically have expected for CBER.

Maybe we can also comment on some of the stock reactions to this appointment, and there are a few areas that Davis in particular has been known for. One is psychedelics, which he’s made some comments about, and another is compounded GLP-1 products. So maybe, if someone wants to comment on the psychedelics—his psychedelics commentary and impact on stocks—I can take the GLP-1 point.

Speaker 1

I can do that. Can you guys hear me?

Speaker 0

Sure can.

Speaker 3

Okay. Hey, what’s up, everybody? I think we’ve talked about it a lot on this podcast, so I can keep it brief. But it does continue to feel like the FDA’s got a door wide open for psychedelic drugs. I mean, the FDA just put out finalized guidance for drug development, which, generally speaking, aligns with a number of the clinical programs that we’ve seen out there from Compass, Definium, and others who are in mid- to late-stage development. That’s as it relates to 12-week primary endpoints, redosing, and best efforts to mitigate functional unblinding.

There was also a publication. Was it in NEJM, or was it another medical journal? It came out in the past few days, came from Dr. Davis, and just reiterates the same sort of perspective. So, I mean, it’s an interesting time, right? Because Compass is about to complete its NDA in the fourth quarter. It’s a rolling review.

I think it’s also interesting because, on the investor side, we’ve still been getting questions about whether there could be AdComs here and whether there could still be lingering questions around things like functional unblinding. For Definium, there’s been this conversation around their next trial, and one of the doses is a lower dose: How subtherapeutic is it going to be, and how much does that matter? I think, big picture, clearly, if not already, we have leadership at the FDA that appreciates the unmet need in psychiatry and is very enthusiastic about this class of drugs.

Speaker 0

Great. And I will take another topic that Michael Davis has been known to comment on, which is compounded GLP-1s. He’s made commentary previously on the importance of really understanding what patients are taking and having patients understand what they’re taking. He was behind, I think, several of the warning letters that went out to some of the compounding groups. So that’ll be another area to watch—another very contentious area—and we’ll see if there are any changes on that front.

Maybe, to wrap up on some of the regulatory and policy topics, I’ll share some takeaways from a conference this week. There were a couple of different broker conferences this week. There was the Wells Fargo conference in Boston, and there was the Cantor conference in New York. I had the pleasure of going to the Cantor conference, and they were kind enough to host a panel on China that I thought I’d quickly share some of the takeaways from.

This was a really interesting panel where they included a few different perspectives. They had Simone, who’s a partner at ORI, which is a China biotech investment fund. They had John Crowley, who is the head of BIO. They had Ken Song, who’s back as a partner at Venrock and is doing a lot of work around China and other geographies, really expanding the firm’s footprint. They also had me on this panel.

It was a very interesting discussion where I think John Crowley really had the opportunity to highlight some of the continued policy discussions that are happening related to China. In particular, he discussed the possibility that some kind of guidance or understanding of policy actions may come forward over the next couple of months. He shared BIO’s position, which is that, while this is something the US really has to watch very closely, and while he and BIO have put forward a number of recommendations for how to improve US competitiveness, any kind of ban would probably not deliver the intended results in terms of actually strengthening US biotech.

So, much more to watch there, but it was a big upgrade from last year. At the Cantor conference last year, I was also on the biotech panel and the China biotech panel, and it was in this little room kind of on the side of the conference. This year was a much bigger panel in the ballroom, so it was definitely an upgrade in terms of the interest in that conversation.

Why don’t we head over to data? There were a number of data readouts over the weekend and early this week. Yaron, maybe I will flip it over to you to start with Novartis.

3. Lp(a) Fails The Outcome Test

Yaron Werber

Yeah, absolutely. So Novartis, along with Ionis, actually had data from the long-anticipated Lp(a) study. It’s the data from the HORIZON study, which was around 8,000 patients. Those of you who have popcorn, this is the time to crunch loudly, because this was highly anticipated, and the data—drumroll—was dropped on Friday, literally at 4:30 p.m. after the market closed, into the Labor Day weekend. Immediately, you knew this data was not positive.

Little did we know that Novartis was going to follow it up thereafter with data from Avidity, which also was not positive, and it led Novartis to be down a lot, about 14%. To go back to Ionis, Ionis was only down very incrementally because it was largely expected for the Lp(a) Phase 3 not to work. Ionis then—that’s Monday morning—and then Pharvaris, which I think Brian’s going to talk about, had their own Phase 3 data in hereditary angioedema. They’re a competitor to Ionis. So then Ionis went down from about 2% down to maybe 5% because that data actually looked very good.

To go back to Lp(a), because this is really important, recall that there has been a lot of epidemiological data looking at Lp(a) as a genetic modifier, a marker for risk regardless of LDL levels and, let’s say, blood pressure and things like that. It was always considered to be an independent potential risk modifier for outcomes, and this was the first study. The population that they enrolled ended up being the most well-controlled population ever in any study. I think average LDL was like 60 to 65, very well controlled on blood pressure, and the mid-teens or so were on SGLT2s.

We sort of knew over time that the data was not going to be amazing. I think everybody was hoping for a low-teens MACE benefit, just given that this was the final analysis in the study and it wasn’t stopped earlier. Bottom line, it looks like it was a completely negative study. We’d actually been working on a big piece heading into that, and we decided, funny enough, not to put it out because we realized all the historical data was in populations that had very high LDL, and the most recent data that literally just came out at the last cardiology meeting, in a more controlled population, suggested that Lp(a) might not be that important.

So this was a little surprising and a little disappointing, obviously, in many ways for the field. That drug is pretty good, pelacarsen. It reduces Lp(a) by 80%. The next drugs—olpasiran from Amgen and the Lilly version—reduce levels by 95% to 100%. So we’ll need to see whether that makes a difference. We’ll need to see how well-controlled those populations are going to be in these big Phase 3 studies.

This was also secondary prevention. Both Amgen and Lilly are not doing primary prevention, where, frankly, Lp(a) might be more of a risk modifier. But the bottom line is that the initial go did not look great. I think, Brian, you probably wanted to comment a little bit on maybe Amgen and Lilly as well.

Brian Skorney

Yeah. Just from the context that they both have targeted therapies that drastically reduce Lp(a), I think one of the things that was interesting about this data point is that, as Yaron said, people weren't very confident in it. What I think was noticeable about the Lp(a) story is not how bearish, but how ambivalent, the biotech mafia has been about this working out, and we'll talk about some of those reasons.

But I have found it to be an incredible talking point among generalists, certainly on the Amgen side. We saw Amgen lose 10% on Tuesday because of this blowup and the read-through there. I fielded a lot of questions on their drug from people who are interested in the thematics of this: This is potentially one-fifth of the total population that has genetically induced elevations in Lp(a).

So it fits into the theme of where people have fallen in love with the obesity side of things because the numbers are just so dramatic. So what is the read-through? You mentioned that Pelacarsen is sort of the least active of the drugs that are in development among the large-cap pharma companies—Amgen, Novartis, and Lilly.

But they do about 70% to 80%, depending on which study you're looking at, Lp(a) reduction, which is very dramatic when you contextualize that LDL reductions of 30% lead to significant, clinically meaningful hazard ratios. So the idea is: Is getting from 80% to 98% going to be a meaningful difference? Do you have to eliminate all Lp(a)?

As you said, there's a lot of conflicting literature, and I think one of the big issues with these studies is that we're just very good at controlling for cardiovascular events. When you're intervening with statins, ezetimibe, PCSK9s, and GLP-1s, all of which benefit people's cardiovascular health, is reducing or eliminating Lp(a) really going to move the needle? Or, even if it is a causative factor, do we have to look at much, much bigger studies because of the standard of care?

The one thing I would point to, and one of the reasons why I think people have been bearish on this of late, is that this study has taken a lot longer than people originally expected. Novartis has said that the pace of events has not been what they modeled. I would say this was something I think we've talked about before, but as a general thematic, when these outcome-based studies have rates that are mismodeled, my experience is generally that the study is going to fail.

If you don't understand what the rate of events is in a study, you're mispowering for the events. You don't really understand what the background meds are. I've almost never seen it where that's wound up benefiting the treatment arm, and that's the case here, right?

While there can be a defense around Amgen and Lilly for having better Lp(a) reductions, there are trial design issues, too. The inclusion or exclusion of stroke in the MACE endpoint could be important. The baseline Lp(a) could be important.

But Amgen has sort of had the same case: This study is not going as fast as they expected. The outcomes are not occurring at the rate that they thought they would. I think that mismodeling is an indication that something's not going right with the study, whether the drug is not reducing a causative factor or the placebo is just doing way better than expected.

We'll have to see. I sort of expect that Amgen data maybe to read out next year, but they're not really committing to anything. The Lilly data may be in 2029, but it's hard to look through this data and have a lot of confidence that pharmacological Lp(a) reductions are going to make a material impact on cardiovascular outcomes.

Paul Matteis

Hey, Brian, can I ask you a question about the other studies—either you or Yaron? One thing that came up in talking about this—because I cover it from the Ionis angle, and as Yaron alluded to, this was always less important to Ionis—is that in this study population, they tried to isolate Lp(a) as a variable. So other factors that could contribute, like blood pressure and cholesterol, needed to be under control.

But I think the flip side is that trying to tease out Lp(a)'s impact on outcomes in the context of patients with other well-controlled risk factors might also have its own intrinsic risks. Or, maybe said another way, maybe it isn't that big of a risk factor when other things are under control. How do you think about that? And are these other studies done the same way, or could they be different tests of this in a different context?

Brian Skorney

I mean, I think there are definitely different contexts. I think those are nuanced differences, though. Certainly, there's a chance that, given the better activity, different patient enrollment, and different care under the clinical trial, there could be differences in outcomes.

But again, what we're probably going to see is that you're going to have a very well-controlled patient population if you're not prospectively forcing that into the study. It's just going to happen because of clinical care. If you're going into a clinical trial, it's hard to imagine that you're not going to get the best care. So even if you're not in the best state going into the study, you're probably going to be managed to some meaningful extent. And that could potentially make it even harder to really see a placebo effect.

But again, they are different studies. They're different drugs. You can't fully write off the Lp(a) thesis. Look, you and I, we've been through this with beta-amyloid. For a decade, I was writing off beta-amyloid drugs, and now I'm a convert. The drugs that are getting brain penetration and getting plaque removal to a meaningful extent seem to actually do something, right?

So there are cases where the biology eventually works out in favor of pharmacology. I just don't see the differences here as so substantial that I think they're likely to play out favorably.

Tess Cameron

Maybe—

Brian Skorney

Yeah, makes sense.

Tess Cameron

Maybe a bigger question for cardiovascular development. Between the ZEUS trial failure, which everyone was kind of watching for—hsCRP and its link to outcomes, and how inflammation could impact cardiovascular disease—and now Lp(a), any general commentary on what this means for cardiovascular drug development?

Yaron Werber

I mean, to the last point, I think the challenge is that the bar is now a lot higher when you have to enroll patients that are very well controlled otherwise. The question is, can you really enroll sort of a random population that is not well controlled and run the study that way? Maybe it's going to be more real-world. I don't know. I don't know how—then how do you convince payers to give you a premium price, though?

Obviously, it's going to be a lot easier to control cholesterol with generics and, obviously, LDL and blood pressure. But I think the biggest challenge, though, is that the powering of the study is going to be based on the historical data with epidemiology, which is not really predictive given how well controlled they're going to be now. And maybe that's really the challenge: How do you write the right study?

What's interesting is that both Amgen and Lilly—and, look, they're both very legitimate players in these areas. They know cardiovascular disease really well, and yet they knew that these events were happening slower than expected. Yet Amgen, literally 6 months ago—actually, 8 months ago—launched a primary prevention study with Lp(a), obviously a huge study, and Lilly almost doubled their primary/secondary prevention Lp(a) study.

Novartis, as you know, also has what is expected to be an annual Lp(a) treatment that is moving to a pivotal study. We'll see if they cancel that now. But they all decided to continue forward despite knowing that the events are not looking great.

Tess Cameron

Yep. Thank you for that great commentary, Yaron. I think it's interesting, just flipping to what this means for some of the private companies. There's a number of companies in the private-company landscape that are working on Lp(a), potential combinations with Lp(a).

We've seen a number of dual-siRNA approaches. I think the hope was that cardiovascular disease could be an area where it would become more accessible for smaller biotechs if we could rely on biomarkers that lower the cost of capital in pretty early-phase trials, in order to raise the money needed for these CVOTs. That story just got a lot more complicated—not just with the Lp(a) failure, but also with the ZEUS failure, which calls into question the predictive power of hsCRP.

We're back to cardiovascular being really hard and taking some time to get the data that we need to understand...

Paul Matteis

The therapeutic impact. Let's continue with Novartis, actually. Brian, maybe I'll go over to you. On Friday afternoon, there was the Lp(a) update, and then we got the update on DM1. Why don't you talk about that with us, Brian?

4. Avidity's DM1 Bet Unravels

Brian Skorney

For me, Novartis is the gift that keeps on giving over Labor Day. I cover Dyne, so this was an important data set, as they have a competitive DM1 product with a lot of similarities. We could copy and paste a lot of what we were talking about with Lp(a) to DMPK knockdown, which is the target of these drugs to help correct splicing in patients with DM1. It's a large muscle disease and an orphan indication, but relatively large for an orphan muscle disease.

This was another big issue for Novartis. They did this $12 billion acquisition of Avidity less than a year ago. Avidity is a platform, and they have a couple of things going on, but they certainly highlighted this as a sort of crown jewel. I think everyone thought of this drug as the main driver of Avidity's valuation last year, when they did the deal. Novartis even put up a slide with maximum potential peak sales of about $6 billion, sort of justifying underwriting the acquisition last year.

This phase 3 failed. Novartis spun it as maybe a little more than just being a flat-out failure, unlike Lp(a), but it wound up not working. This has been a hot debate among the biotech community: whether or not this study was going to work, whether or not these drugs work, and how to properly design studies to hit endpoints that are relevant in DM1. I think it does call into question the idea that you can knock down DMPK in muscle.

This is a muscle-targeted silencing drug via an antisense oligonucleotide against DMPK. They have shown DMPK reductions in patients and decent benefit on an endpoint called vHOT in phase 2. That's what they designed this phase 3 around as the primary endpoint, with a number of secondary endpoints. Novartis teased that there might be something interesting in subgroup analyses or secondary endpoints in this study, which we'll have to see when they present the full data.

The failure is a huge disappointment for DM1 patients, who don't really have an option in terms of care or treatment. This would be disease-modifying if it worked, and it raises a lot of questions about what happens for DM1. I never got there on Avidity. I started covering Dyne and not Avidity because I thought there were a lot of questions about the next downstream marker in terms of what you're looking for as pharmacological activity.

There's this measurement, CASI-22, which is a measurement of splice correction. It's not totally standardized, and there is a lot of assay variability and all the questions that you always have when you're measuring something like splice correction in patients. The Avidity data never really showed me any compelling evidence that they were actually achieving splice correction, despite showing DMPK knockdown in blood measurements. Whereas Dyne does show placebo-adjusted CASI-22 benefits. Their average is about 25% splice correction.

That's where I was going into this data set. It certainly causes me to question the overall thesis: Do you need a lot of splice correction or a little splice correction? Is this the right assay? Is there so much variability that you don't really know what's going on in these patients? The bigger question is whether vHOT is just one of these endpoints that's so heterogeneous over a long or short period of time, or in different scenarios, that it's very hard to show a benefit on vHOT. Maybe this is just the wrong endpoint to use for DM1 studies.

Companies can think about looking at different endpoints over longer time frames to show functional benefit. We're going to see expansion-cohort data from Dyne early next year for their version of this drug. We're also probably going to see the full Novartis data set at WMS in Japan in a few weeks, so we'll get a better picture there.

Certainly, this is another big disappointment from the standpoint of Novartis management, given the scale of that acquisition. I know Yaron was going to talk a little bit about seeing some activism against Novartis in the wake of these events.

Paul Matteis

Do you guys mind if I just chime in on the DM1 space real quick?

Yaron Werber

Go for it.

Brian Skorney

Do it.

Paul Matteis

I cover Dyne too, like Brian, and I've covered Alnylam and Ionis for a really long time. As Brian alluded to, a big question with the Avidity approach in DM1 was that they use siRNA, whereas Dyne uses an antisense oligonucleotide. In most readouts where the two are head-to-head, siRNA has outperformed. We just saw this in the TTR space. It's probably not just a payload issue, but the siRNA payload seems to be more potent and may have a wider therapeutic index most of the time.

This disease is different because the protein isn't toxic; it's the DMPK RNA that's stuck in the nucleus of the cell. There was always a question as to whether siRNA is the right modality for that, because the original description of the siRNA mechanism of action was that it was cytoplasmic. What's interesting is that if you look at a couple of the diseases where ASOs have thrived, they've been nuclear targets, with SMA being one of them. We don't see a siRNA SMA program in clinical development.

When these companies were private, before they went public, and when they were early public, they had really only preclinical data. Even the Dyne preclinical data, we always thought, was much more convincing for nuclear knockdown. Some people I talked to on the industry side who were involved in siRNA were a little skeptical—not that siRNA wouldn't work at all, but that it was really the right modality. If it's active in the nucleus but much more active in the cytoplasm, it's going to lower more of that healthy DMPK transcript, which is probably half of it.

To Brian's point, we've seen DMPK lowering for these companies, but you can't differentiate between the mutant and the wild-type transcript. I'm still hopeful that Dyne has a shot. The endpoint question around vHOT is part of the right question, for sure. If you look back at the phase 1 and 2 data for both companies, Dyne's vHOT data does look more consistent from cohort to cohort. They have a bigger impact on splicing.

We saw Dyne's stock trade down a lot and then recover a decent amount, too, because I do think some people appreciate these nuances. For Dyne, if it does work, the setup has changed a lot. Previously, they were a second mover trying to pursue an accelerated-approval regulatory strategy, while Avidity was pursuing full approval. Now that could be different. If they actually do work, they're in the lead, and their upside, I think, has increased.

Yaron Werber

Yeah. Maybe let me kick it off, and then Brian can chime in and supplement further.

5. Novartis Faces Activist Pressure

This is fairly unusual. The key letter came out of Artisan Partners, which essentially raised concerns about board oversight of acquisitions, whether Novartis needs stronger board talent and an acquisition committee, and advocated for a compensation overhaul away from adjusted metrics that exclude specific write-downs, which are usually related to one-time acquisition-related charges. Ultimately, it called the party, sort of quote-unquote, “being over” and really criticized the chair.

It sounds like several other shareholders spoke with Reuters and also really called into question the acquisitions and the merit of some of them, whereas others defended him, saying this is within the normal sort of odds of development. I think Novartis basically said that its strategy will remain unchanged. They’re going to be looking at the broad pipeline, capital allocation with bolt-ons, dividends, and buybacks.

I think what was outsized here is that the deal for Avidity was about a $12 billion deal. Usually, Novartis talked about $5 billion and below for bolt-ons. I think the challenge, if you look at Street models, is that our team specifically on the pharma side—our esteemed colleagues—removed about $5 billion in sales from the model in their published research. It shaved off the EPS CAGR by about 200 basis points, to 4% long term.

Where this really hurts Novartis is that these cuts came at the time when they needed these revenues to be there, as they’re facing loss of exclusivity. Again, I think this calls into question—Novartis actually hired a very esteemed analyst, Ronny Gal, to run BD and strategy there. It’s always a question of how much risk you want to take. Do you want to go early, maybe pay $2 billion, $3 billion, or $4 billion for bolt-ons before, let’s say, proof-of-concept Phase 2 data comes out?

At that point, you should be hitting success rates like a three-point shooter. I think it’s maybe 35% or 40% these days with the modern NBA, as opposed to $12 billion, like in this case, in which case you need to be a free-throw shooter at a 90% or 92% range.

We’ve always advocated in our work that when you do a $12 billion deal, you might not take, quote-unquote, “clinical risk”—famous last words, because you always do—but you never actually hit your commercial published sales estimates in the 10-K filings that you put out to the SEC. We’ve done an analysis, and rarely do these deals actually get remunerated because, as you know, no one’s going to say, “We pay 10 times peak.” What they say is, “We pay 3 times peak,” which is digestible and acceptable, but then they totally inflate what these revenues are going to do.

Look, the bottom line—and again, our view—is that we all know pharma is not a sustainable business model. You do have exclusivity, which is unique; no other businesses really have that. M&A is usually value-defeating. We do believe you should go early. Do 6 deals, not 1. Maybe hope for 2 of them to work, and then they’re going to work in an outsized way, and you keep the financial upside.

Just doing stock buybacks and acquisitions has historically never worked for large-cap biopharma, in our view. Something else needs to go right for these stocks to then come back. But Brian, over to you.

Brian Skorney

Yeah. I’ve been talking about that with investors a lot this week, too. Novartis just isn’t the only one. We’re looking at, I don’t know if I want to say unprecedented, but borderline-unprecedented losses of exclusivity across large pharma over the next 5 or 10 years. There is a need to replace these revenues.

I mean, look, that’s probably why we were having one of the best M&A years ever in biotech, and I think that’s a driving factor. These company management teams realize they can’t cliff their revenue stream, and they need to find things to fill in there.

I guess the question for me, and what I’ve been talking about with investors, is that Novartis has seemed like one of the more risk-tolerant companies in terms of buying things that aren’t completely clinically validated or de-risked. Certainly, with the Avidity deal, that’s kind of blown up in their face.

We all know—I have gotten blown up on so many clinical-stage companies before when I think something is going to go right and it winds up going horribly wrong. That’s the game. But for Vas and Ronny, they’re kind of in the hot seat just from the one deal. There was a probability that this deal was going to go south, and they took that risk.

I just wonder if this pushes more companies to do de-risked acquisitions. Is this favorable for early commercial or post-Phase 3 companies, where maybe pharma is going to just overpay to acquire revenues? You’re probably not on the hot seat 9 months later because a Phase 3 clinical study from the $12 billion deal you did winds up blowing up and having to be written down.

Paul Matteis

Well, yeah. Brian, DM1 is muscle, but it’s neurology, right? It’s a disease with subjective endpoints. We saw what happened with Cerevel and AbbVie, and we’ll soon see what happens with Karuna in the ADEPT study with Bristol. If that’s negative, I would say in neurology, development-stage deals are going to be a pretty tough sell until something’s fully de-risked.

Brian Skorney

Yeah, agreed.

Tess Cameron

The other thing that we’ve seen is a fair amount of fairly early M&A, where the deals are small enough and the company is early enough that if it does blow up or doesn’t end up working, you haven’t lost too much. It’s interesting, but I wonder if that could lead to a kind of barbell approach, where you’ve got to be pretty de-risked or early enough and cheap enough that if something does blow up, it’s all right.

Paul Matteis

Hey, Tess, can I ask you a question about that?

Tess Cameron

Yeah, please.

Paul Matteis

You and colleagues of yours often have board seats in earlier-stage companies that are probably dual-tracking the whole IPO-versus-M&A process. What is the conversation like inside an early-stage company when there’s a bid? How level-headed are some of these entrepreneurs, who are obviously deep believers in what they’re doing, about what the true probability of success is?

An investor and analyst might be involved in an IPO of a company and think it’s a really attractive stock, while still modeling a 30% or 40% probability of success. Is it hard for some of these earlier-stage company entrepreneurs to really think that way? What’s your experience?

Tess Cameron

I think it varies so much by individual and also by board member. It’s obviously an area where a lot of people have strong opinions.

For a lot of entrepreneurs, when they get a bid and an offer, that is real money on the table. You don’t want to ignore or diminish that, and you have to take it seriously. Where we find ourselves working with a lot of our entrepreneurs who have had offers like that is helping to reinforce confidence, because they’re there for a reason, and we’re investors for a reason: We believe that these are programs that can have value and that we can take forward independently.

You just have to really balance that, have a realistic assessment of what a path forward looks like, and really help reinforce the confidence of the executives on the team about the ability of the investor syndicate to stick by them and help bring things forward. That’s where we often find ourselves in these conversations. Of course, in every case, there’s a number where it works, right?

Paul Matteis

Makes sense.

Yaron Werber

Let me maybe chime in on this, and everybody, please chime in more. One of the things is that we spent a few years in the CFO role and even had some BD responsibility, and the team around where we were was very experienced in BD, so we got to learn a little bit about this area.

One of the things that may not be totally appreciated externally is that when these companies do deals, you know, when you get married, you marry who you want to. When you do deals, you sometimes ultimately buy who you’re able to buy. We always think on Wall Street, “There are 37 companies you could buy. You should buy these 3.”

Those three might not be sellers, to Tess's point. They might not be sellers at that point, either, or at the valuation that you want. So, on the other side, it's very hard to do Vas's job and Ronny's job. You don't have an unlimited set of options.

We always think these companies have 100 levers they can pull. That's not the way it works at all. When you need to do deals that are accretive to you at a certain point and at a certain risk parameter, you really don't have a huge number of options that are also in your therapeutic area, that fit, and that you're going to get consensus on internally—from R&D, finance, strategy, clinical, regulatory, and your board—to actually do. We have to keep that in mind, too.

Tess Cameron

Yeah.

Yaron Werber

I'm not defending; I'm just—

Tess Cameron

Really important point, Yaron. Yaron, maybe sticking with you, let's talk about one of the positive data sets that came out this week. Roivant had Phase 2 data in PH-ILD. Tell us about their data.

6. Roivant Delivers Positive Data

Yaron Werber

Yeah. That's really happy news, and big congrats to Matt Gline, who is a very frequent guest and the CEO of Roivant, as everybody knows. He's really done an outstanding job and is a real talent. Roivant is extremely well managed.

Recall that this is a program that is inhaled once a day. It's a soluble guanylate cyclase mechanism that they in-licensed from Bayer. When they did the Bayer deal, I think many of us were scratching our heads and saying, "Hmm, it's kind of interesting that Bayer developed this inhaled program," because Bayer has an oral drug that is approved for pulmonary arterial hypertension, or PAH.

What we're talking about is PH-ILD, which is pulmonary hypertension–interstitial lung disease. There are 4 different categories. This is sort of the 2 extremes of a different market from PAH. So why is Bayer out-licensing it? Ultimately, it's because they're clearly not moving forward in this area broadly as part of their rebalancing and restrategizing.

There was interesting Phase 1b data that showed a very good pulmonary vascular resistance benefit in the lung—reducing the blood pressure and the resistance in the lung, which improves heart function—and this is sort of the proof-of-concept Phase 2. This was about a 16-week study with, obviously, an extension—a decent-sized study. We all knew that PVR was going to work because, in the past, they showed a 38% reduction with a single dose. So we sort of knew that was going to work. It showed 56%, by the way, so really solid.

But we didn't really know whether the six-minute walk test would work. That is what you need to show in Phase 3. When you looked at that, you sort of knew physiologically that if you do one, the other one should follow suit. But there isn't really that much data to draw on in this area, either from them or from their competitor, Tyvaso from United Therapeutics, which is approved.

Specifically with Tyvaso, they showed the six-minute walk data, but interestingly, they never released their PVR data in Phase 3, so we couldn't at least have some correlation. The study, of course, going back to Roivant, was pretty small and underpowered for the six-minute walk.

That data came out and looked amazingly good: 36 meters. Thirty meters is what you need to see, and, more importantly, it got better and better, reaching a 50-meter benefit by 48 weeks. So patients continued to improve. In true Roivant fashion, when they released the data, they said, "Aha, surprise, the Phase 3 has already started."

They are constantly able to move timelines up, which was the original premise of Roivant: that they would do things better and faster than pharma does. So it was surprisingly positive that the Phase 3 is already ongoing, too, in what could be a sizable market. Based on relatively small penetration, you get to about 2.5 billion in sales.

They're also running a study now in combination with Tyvaso, which is the United Therapeutics drug. The one issue with Tyvaso is that it does cause cough, whereas the drug from Roivant does not cause cough at all, so it seems to be better tolerated.

Phase 3 is ongoing. They'll talk to the FDA to see whether they need to change the trial design, maybe just incrementally now that they have the full data in-house. The stock has performed really well. They're obviously launching brepocitinib now, which just got approved for dermatomyositis, and the expectation is for a solid launch. They have a lot of catalysts coming. So again, congrats to Matt and the team. Really great job.

Tess Cameron

Yeah. Just echoing how it's been a great year—a really strong year for Roivant, really strong execution—and it's fantastic that they not only released positive results but are also getting going on their trial really quickly.

I think the expectations for this program were very low, right, Yaron? I think it was a pretty big surprise that it had the therapeutic impact that it did. So let's move on to the next one. Paul, I think there are a couple for you. Maybe you can share some updates for Biohaven and Pharvaris that came out this week.

Paul Matteis

Yeah, sure. I can zip through these. Biohaven had what looks like a small setback but might be more meaningful in context for their KV7 drug in epilepsy, which was put on partial clinical hold. It's in Phase 3, and the data are coming quite soon.

There's some opacity around the disclosure here. It's related to a metabolite in rats where there's insufficient information to characterize the risk in people. We've seen things like this before. These can be significant issues, or they can be complete non-issues. There was a whole metabolite question with lumateperone back in the day in one species, and look at what that ended up meaning to Intra-Cellular Therapies: a whole lot of nothing.

The broader context here is that these guys are second behind Xenon in the KV7 space in epilepsy. Xenon's clinical data and profile for azetukalner are pretty incredible. Their data are awesome. Efficacy is differentiated, and safety and tolerability are really good at their lowest dose, which still has respectable seizure reduction. So it probably just makes it tougher for them to compete in this market. I don't know if Brian had anything to add on that one.

Brian Skorney

Yeah, just real quickly. I think the interesting nuance here is that they just did this deal with SK Biopharmaceuticals a couple of weeks ago, right?

Paul Matteis

Right. Yeah.

Brian Skorney

This may wind up being nothing, but I've been fielding questions on Biohaven like, "Is SK going to pull out of this deal? Do they have a basis to pull out of this deal?" I think SK held a call yesterday, and they said they're talking with Biohaven about not closing the deal until after this is resolved. Biohaven is saying they could resolve this in a month. Maybe a month from now, it's fine.

I kind of agree with you: I'm a big azetukalner fan. I like Biohaven as a company for reasons other than BHV-7000. Partnering with SK, which already has a very good epilepsy drug launch under its belt, seemed like an ideal partnership. The fact that they're bringing in $400 million upfront from the deal, I think that's a huge win for Biohaven.

I do not want to see any risk to this partnership. I think that's where people are getting edgy: "You definitely don't want SK to wind up walking away here because it's unclear that, outside of some Goldilocks position, Biohaven with BHV-7000 is going to be in a position with the dose flexibility to really compete with azetukalner, given how much more data they have."

Paul Matteis

Yeah, that's great context. Thanks, man.

And then, Pharvaris—Yaron alluded to it earlier—but these guys finally broke through something that people have been trying to do for a long time now: generate really competitive efficacy data with an oral drug for HAE prophylaxis.

HAE, or hereditary angioedema, is a disease where you have intermittent swelling attacks. As far as rare diseases go, it's probably become one of the better-served markets, just with the amount of iterative innovation there. Going back to Dyax and ViroPharma, and then today, you've got prophylaxis drugs like Takhzyro from Takeda, which is reducing the frequency of these attacks by 90%.

We saw BioCryst come out with the first oral prophylaxis drug, but the attack reduction there was in the 45% range. This was over 80%. I'm sure the analysts covering Pharvaris closely are trying to do the granular patient modeling or reconcile where this drug fits in an increasingly competitive landscape.

Paul Matteis

And there are other programs coming here too that could potentially further decrease the injection frequency, even to every 6 months. I think that will be an interesting question: Do patients prefer an oral every day, or do they prefer an injection every 6 months?

But as it relates to Pharvaris, the thesis looks like it played out. That company had a bump in the road, too. I think at one point they had at least a partial clinical hold. Look at the data now. Big success for them.

7. Structure Tests Oral Amylin

Tess Cameron

Yeah, great. Maybe we'll close with another data update that we got this week, which was from Structure Therapeutics. A lot of people were watching their oral amylin for weight loss. There's been a lot of excitement about the amylin space, particularly amylin injectables, and Lilly's eloralintide is probably the only amylin out there that could get to competitive monotherapy efficacy.

There's quite a bit of interest in Structure Therapeutics for having the first oral amylin that we now have clinical data on. Structure shared the results of their single-ascending-dose study, and the top dose, which was 10 milligrams, showed 3.3% body-weight loss with just 1 dose. I think the market was a little disappointed. The stock sold off, rebounded a little bit, and then sold off a little bit more.

Overall, some of the reasons for that may just have been higher expectations for overall weight loss or perhaps tolerability, which had pretty high rates of nausea and vomiting at some of the higher milligram doses. But I think it's exciting to see more oral drugs come into the space and see not just the GLP-1 orals. We have oral Wegovy, which was launched a while ago by Novo, as well as orforglipron.

Structure is right up there with their GLP-1 and now has another target to think about in terms of combinability with their oral. Any other comments or data that folks want to comment on from this week?

Great. Let's hope for—I think we had a good discussion. Lots of challenging data this week. Good to have a couple of bright spots, with the Roivant data in particular. I really appreciate everyone tuning in, and I wish everyone a great weekend.