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Welcome back to Endpoints Weekly, our roundup of the top headlines in biopharma. Earnings season continued this week, with more comments from pharma executives on the potential impact of tariffs, new details around Pfizer and Moderna’s cost-efficiency efforts, and more. Read below for a recap of the top news out of this week’s earnings calls. We’ve also got a summary of data out of the American Association for Cancer Research’s annual meeting, where Lei Lei Wu reported from Chicago. And Endpoints News’ Andrew Dunn welcomed Arc Institute co-founder Patrick Hsu to our special Slack channel to discuss all things AI. Stay tuned next week as more companies, including BioNTech, Novo Nordisk, Takeda and more, report their earnings.  — Nicole DeFeudis 💲 More pharma companies reported their Q1 earnings this week, including AstraZeneca, Novartis, Pfizer, GSK, Eli Lilly, Moderna and Amgen. Tariffs were a central theme during earnings calls, as drugmakers provided some detail on the potential impact to their business. “Our goal, as I mentioned, is to have 100% of our products produced in the US for the US,” Novartis CEO Vas Narasimhan said during a first-quarter earnings call with the media Tuesday. AstraZeneca CEO Pascal Soriot said the company “can actually move the manufacturing of products that are made in Europe, move it to the US for supply to the US. And we can also potentially do the other way around.” Here’s what else our reporters tracked: The privately-held biotech Stealth BioTherapeutics said its rare disease drug was delayed this week. A person familiar with the situation said the company hadn’t been asked to run more trials or provide more data, that the FDA hadn’t identified any safety concerns, and that the agency hadn’t raised manufacturing issues, Endpoints’ Max Gelman reported. The apparent delay comes amid upheaval at health agencies, though several companies have said in earnings calls and interviews in recent weeks that they aren’t seeing an impact on their interactions with the FDA so far. The agency made decisions on time for two other drugs this week: Johnson & Johnson’s rare disease drug Imaavy and Satsuma Pharmaceuticals’ migraine drug Atzumi. The agency also hit PDUFA dates for other big-name medicines in recent weeks, like Dupixent, Amvuttra, Uplizna and Eylea. Stealth’s drug had an original decision deadline in January, but the company said the FDA requested more time to review supplemental material. Max examines lingering questions around the situation here . AACR recap: Data from GSK, Merck and more 🔬Scientists descended on Chicago this week for the American Association for Cancer Research’s annual meeting. Some in attendance, including cancer scientists, former NIH leaders and patient advocates, spoke about how cuts to science funding could impact cancer research. “It is a time to be clear-eyed about what is happening and to decide what role each of us is willing to play,” Yale oncologist Patricia LoRusso said during a panel. Read more here . Elsewhere, GSK presented data showing that its PD-1 inhibitor Jemperli induced a 100% complete response rate in 49 patients with a specific type of rectal cancer after six months. Even though the results were excellent, Endpoints’ Elizabeth Cairns reported that they are unlikely to have major commercial implications. Jemperli is already approved in this cancer type, known as mismatch repair deficient (MMRd) solid tumors, though only after the patient has progressed on prior treatment and has no further options. The new data could move the product into the neoadjuvant setting for dMMR cancers, but it’s still a tiny patient population. Only around 3% of solid tumors carry the dMMR biomarker. Merck also impressed with Keytruda data in head and neck cancer, showing that adding Keytruda before and after surgery cut the risk of disease recurrence or death by 27%. Patients in the study remained disease-free for more than four years at the median. 🌎 The US’ drug infrastructure has historically been robust, making it an attractive country in which to run clinical trials. But some companies say uncertainty is driving them to look elsewhere for their studies. Jared Whitlock examined this phenomenon in a story this week . Of note, companies find FDA Commissioner Marty Makary’s comments on rare disease approval pathways and animal testing largely promising. “Since we are in the ultra-rare disease space, Makary’s words on creating paths for rare [diseases] creates hope, and we are looking forward to learning more about his plans,” Mahzi Therapeutics CEO Yael Weiss said. While overseas trials have limitations, agencies in Europe, Canada, Australia and the UK have worked in recent years to harmonize guidelines with the FDA. 🎤 Endpoints’ Andrew Dunn welcomed Patrick Hsu to the newsroom’s Slack channel earlier this month to share his thoughts from the frontlines of the AI bio space. Hsu co-founded the Arc Institute in 2021, a Palo Alto, CA-based nonprofit research organization that has spearheaded some leading AI biology research. “I think AI will become a universal copilot that we use for everything,” he said during the interview. Read more here . DON’T MISS: