
Opinion|Videos|April 7, 2025
Post-Imatinib Progression: Decision Factors and Treatment Options
Experts discuss key factors influencing decision-making when patients with advanced gastrointestinal stromal tumors (GIST) progress on imatinib, reviewing standard second-line options, considerations for increasing imatinib dosing vs switching to a different tyrosine kinase inhibitor (TKI), and clinical or radiographic patterns that guide therapy changes or dose escalation at progression.
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Episodes in this series

Video content above is prompted by the following:
- With imatinib as our established first-line therapy for advanced GIST, what key factors influence your decision-making when patients progress? What are our standard second-line options, and what factors influence this treatment selection?
- What specific clinical or molecular factors would lead you to consider increasing imatinib dosing rather than switching to a different TKI?
- What specific clinical or radiographic patterns at the time of progression signal would definitively guide you to switch therapies vs dose escalation?
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Here is your cheat sheet to all therapeutic options that were cleared by the FDA in September 2026 spanning tumor types.

The FDA approved tucatinib plus trastuzumab and pertuzumab as maintenance for advanced HER2-positive breast cancer after induction.

The c-Met–directed ADC was designated for EGFR wild-type nonsquamous NSCLC after platinum chemotherapy and anti–PD-(L)1 therapy.

Dana-Farber’s Xin Gu, PhD, and Nicholas Polizzi, PhD, received NIH New Innovator Awards for high-risk, high-reward research.

The c-Met–directed ADC-based combination was designated for mCRC previously treated with fluoropyrimidine, irinotecan, oxaliplatin, and anti-VEGF therapy.

Pooled data from 3 randomized trials showed ropeginterferon alfa-2b improved responses vs phlebotomy alone but not vs hydroxyurea in polycythemia vera.
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