Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
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Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
Dr. Howard Fillit & Mark Roithmayr of ADDF on Alzheimer’s Innovation, Funding & Biomarkers
Biotech 2050 Podcast
41 minutes 51 seconds
5 months ago
Dr. Howard Fillit & Mark Roithmayr of ADDF on Alzheimer’s Innovation, Funding & Biomarkers
Synopsis:
What happens when a world-class scientist and a philanthropic legacy collide with one of medicine’s greatest challenges? Dr. Howard Fillit and Mark Roithmayr of the Alzheimer’s Drug Discovery Foundation (ADDF) join host Alok Tayi for an inspiring conversation on bold science, visionary funding models, and the future of Alzheimer’s research. From treating Estée Lauder in the 1990s to building a $100M venture philanthropy engine, they trace ADDF’s evolution into a global leader in high-risk, high-reward drug development. The discussion covers the rise of biomarkers and digital diagnostics, the foundation’s partnerships with visionaries like Bill Gates and Jeff Bezos, and how ADDF’s venture philanthropy approach bridges the “valley of death” in biotech. They also dive into global regulatory challenges, the economic urgency of Alzheimer’s, and why the future lies in prevention, precision medicine, and a patient-first mindset. This episode is a masterclass in scientific grit, ecosystem thinking, and turning urgency into progress.
Biography:
Howard Fillit, MD
Founding Executive Director and Chief Science Officer of the Alzheimer’s Drug Discovery Foundation
Howard Fillit, MD, is a geriatrician, neuroscientist, and innovative philanthropy executive, who has led the Alzheimer’s Drug Discovery Foundation (ADDF) since its founding. Dr. Fillit has held faculty positions at The Rockefeller University, the SUNY-Stony Brook School of Medicine and the Cornell University School of Medicine. In 1987, he joined the Mount Sinai School of Medicine, where he is a clinical professor of geriatric medicine and palliative care, medicine and neuroscience. Dr. Fillit also maintains a limited private practice in consultative geriatric medicine with a focus on Alzheimer's disease and related dementias.
He has authored or co-authored more than 300 publications and is the senior editor of Brocklehurst's Textbook of Geriatric Medicine and Gerontology. Dr. Fillit is the recipient of many awards and honors including the Rita Hayworth Award from the Alzheimer's Association.
Mark Roithmayr
Chief Executive Officer
Mark Roithmayr is an admired nonprofit leader with four decades of experience in both start-ups and mature organizations. As CEO of the ADDF, he is responsible for steering the Foundation’s overall strategy, focus, and business operations. Since joining the ADDF in 2017, the organization has transformed dramatically in impact, scale, presence, and brand. Under his leadership, the ADDF’s revenue has increased five-fold from $17M to over $90M, and mission-related investing has grown over 100%.
He works closely with Dr. Fillit, executive leadership, and the board to advance the ADDF’s mission of accelerating the discovery of drugs to prevent, treat, and cure Alzheimer’s disease and related dementias. His key accomplishments include securing donations from Bill Gates, Jeff Bezos, and MacKenzie Scott, and a 10-figure gift from the Lauder family to cover ADDF’s overhead for the next 20 years.
Biotech 2050 Podcast
Synopsis:
Nimbus Therapeutics CEO Abbas Kazimi walks Alok Tayi through the company’s evolving pipeline and playbook for choosing the right risks in a noisy biotech environment. From Werner helicase for MSI-high cancers to a highly selective SIK2 program and GLP-1–adjacent strategies focused on body composition, Abbas details how Nimbus balances rigor, speed, and capital efficiency.
He shares candid lessons from pausing and later resurrecting AMPK beta in partnership with Eli Lilly, the decision to remain modality-agnostic but small-molecule-centric, and the importance of knowing when not to chase the latest fad. Throughout, Abbas returns to a consistent theme: success at Nimbus comes from disciplined target selection, deep collaboration, and a culture that empowers teams to make hard calls in service of patients rather than headlines.
Biography:
Abbas Kazimi is the Chief Executive Officer of Nimbus Therapeutics. Previously, he served as Chief Business Officer, leading the company’s strategic and corporate development efforts while overseeing business operations. Since joining Nimbus in 2014, he has helped raise over $630 million in equity financing and led transactions totaling more than $8 billion.
Notably, Mr. Kazimi spearheaded the $6 billion sale of Nimbus’s TYK2 program to Takeda, the $1.2 billion sale of its NASH (ACC) program to Gilead, and multiple licensing deals exceeding $1.5 billion with partners such as Genentech, Celgene/Roche, and Eli Lilly. Under his leadership, Nimbus has advanced four programs into the clinic, returned over $4 billion to investors, and continues to expand its computational drug discovery and clinical development capabilities.
In 2025, Mr. Kazimi joined the board of Unnatural Products (UNP), a biotech company pioneering orally delivered macrocyclic peptides to tackle previously undruggable targets. He also serves on the Editorial Advisory Board for In Vivo magazine, a leading publication offering strategic insights and analysis of the pharmaceutical, biotechnology, medtech, and consumer health industries. Along with his family, he established the Kazimi Family Endowment for Data Science in Oncology at MD Anderson Cancer Center. This endowment reflects their personal commitment to philanthropy and their vision for revolutionizing cancer treatment through data-driven innovation.
At the core of Mr. Kazimi’s leadership is a deep sense of purpose—one that seeks to change the trajectory of medical diagnoses where options are limited. The ability to give patients, prescribers, and families a new outlook on life is a powerful responsibility—and one he knows the biopharmaceutical sector has the ability to fulfill.
Before Nimbus, he was at Extera Partners, LLC (formerly PureTech Development, LLC), where he provided strategic advisory, supported fundraising, and executed numerous business development transactions. Earlier in his career, he was with JSB-Partners, LP, a specialized investment banking and advisory firm serving biotech and pharmaceutical companies.
Mr. Kazimi holds a B.A. from the University of Texas at Austin and an M.S. from Harvard University.
