Tango Therapeutics Stock Tumbles 16% Despite 82% Response Rate in Pancreatic Cancer Combo Trial at ESMO
Tango Therapeutics (TNGX) shares fell 16% despite presenting pancreatic cancer trial data showing an 82% response rate. The stock had risen 28% before the release. The trial tested vopimetostat with Revolution Medicines' daraxonrasib. Phase 3 plans are set for 2027. Investors may have taken profits after the stock's recent gains.
How this was made

The 30-second read
Why it matters
The data were released after a period of share price rally, leading to profit‑taking and concerns about the trial's size and timeline, driving a 16% drop.
Market read
First‑report trial data triggered a sharp intra‑day sell‑off, highlighting market sensitivity to early‑stage oncology results.
What to watch
The data set is still small (22 patients) and progression‑free survival is not yet reached; investors may be over‑reacting to a short‑term price move.
Background
Tango Therapeutics presented updated Phase 2 data at the ESMO Congress, showing an 82% tumor‑shrink response in a genetically defined pancreatic cancer cohort.
Ticker impact
Tango Therapeutics disclosed Phase 2 pancreatic cancer combo trial results with an 82% response rate, causing the stock to tumble 16% in early trading.
likely continued pressure as the market prices in concerns over trial size, durability and upcoming Phase 3 timing
The stock fell sharply on the same day the data were released, indicating a strong immediate reaction that may persist until further clarification.
Market effects
Biotech investors may reassess other early‑stage oncology combos, especially PRMT5 inhibitors.
US biotech sector could see modest pullback amid heightened scrutiny of trial data.
Limited to investors tracking clinical‑trial outcomes; no broader macro effect.
Counterpoint
The strong response rate and disease control could support a rebound if Phase 3 enrollment proceeds smoothly.
Key entities
- CompanyTango Therapeutics
Biotech firm developing PRMT5 inhibitor vopimetostat.
- CompanyRevolution Medicines
Partner providing daraxonrasib for the combo.

