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Kymera Jumps on KT-621 Phase 1b Win, Advancing Oral STAT6 Degrader Into Phase 2b

Investors now look to a Phase 2b eczema readout by mid-2027 with an asthma study starting in early 2026.

Overview

  • Phase 1b in moderate to severe eczema enrolled 22 patients for four weeks and nearly eliminated STAT6, showing about 98% reduction in blood and 94% in skin with symptom and biomarker improvements and a favorable safety profile.
  • Shares surged more than 40% to a record high on the update, lifting 2025 gains to roughly 140%.
  • The eczema Phase 2b trial is underway with topline results targeted by mid-2027, and an asthma Phase 2b is slated to begin in the first quarter of 2026.
  • KT-621 is an oral degrader of STAT6, a protein central to Type‑2 inflammation implicated in eczema and asthma.
  • Coverage notes a roughly $4.8 billion market value, about $979 million in cash with runway into the second half of 2028, and a newly announced $500 million equity offering that could rise to $575 million with a $75 million overallotment option.