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JAKAFI + Parsaclisib TRANSFORM-2 Phase 3 Readout

INCY·JAKAFI·Myelofibrosis··NCT04173494
current best date
H2
'26
HALF4 months
Takeaway

Phase 3 readout for parsaclisib added on top of JAKAFI in myelofibrosis patients with sub-optimal response to ruxolitinib monotherapy. Watch: spleen volume reduction (SVR35) and total symptom score (TSS50) at week 24 vs. JAKAFI + placebo.

What’s at stake

market · comparables · base rate · prior moves
Market opportunity
company filings
Peer comparables
1 readout
ClinicalTrials.gov
Stage base rate
~100%
BIO Industry Analysis 2023 (2011–2020)
Avg prior-readout move
historical price reactions
Drug
small molecule
JAKAFI
ruxolitinib · INN
MoAJAK1/JAK2 inhibitor

JAKAFI (ruxolitinib) is an oral small-molecule inhibitor developed by Incyte that blocks Janus kinase 1 and 2 (JAK1/JAK2), enzymes whose overactivity drives abnormal blood cell proliferation and inflammatory signaling in myeloproliferative diseases. The drug is approved for myelofibrosis, polycythemia vera, and steroid-refractory graft-versus-host disease; in myelofibrosis, JAK inhibition reduces the enlarged spleen and debilitating constitutional symptoms caused by progressive marrow fibrosis. Incyte is studying ruxolitinib combined with the PI3Kδ inhibitor parsaclisib in patients who have an inadequate response to JAKAFI monotherapy.

Indication
Oncology - Heme
Myelofibrosis
MeSH · D009190

No primer in glossary yet.

Trial
active
NCT04173494
TRANSFORM-2 Phase 3 Ruxolitinib + Parsaclisib
Phase
Ph 3
N
380
Primary completion
Jul 30, 2026
Reference data · comparable readouts

How Appr readouts in Oncology - Heme have landed.

Reference, not prediction. We surface the historical record so you can read it yourself. We never extrapolate to the upcoming event.

Positive
0/0
0% in record
Primary endpoint hit
0%
across 0 readouts
Drug · sponsorPhase · yearOutcomeKey metricSource
pirtobrutinib (BRUIN-321)
LLY · CLL
Ph3 · Dec 2024positivePFS HR 0.54PR
mosunetuzumab
RHHBY · r/r FL
Ph2 · Jun 2022positiveCR rate 60%conference
sorted by phase match, then recency · sources span PR wires, CT.gov, FDA notices, and conference presentations · we never editorialize the outcome label

Competitive landscape

4 peers in Oncology - Heme · ranked by indication + modality match
DrugCompanyModalityMechanismPhaseNext catalyst
CASGEVYexagamglogene autotemcelCRSPcell therapyCRISPR/Cas9 BCL11A enhancer editCONFERENCE · Dec 26
reni-celEDITcell therapyCRISPR/Cas12a HBG1/2 promoter editCONFERENCE · May 26
BEAM-101BEAMcell therapybase editing of HBG1/2 to reactivate fetal hemoglobinREADOUT · Dec 26
CB-010CRBUcell therapyallogeneic CRISPR-edited anti-CD19 CAR-TCONFERENCE · May 26

Disclosure trail

1 observation · sorted by confidence
  1. Mar 18, 2026·1mo agopinned · highest confidence
    HIGH confPR
    top claim
    H2'26
    HALF
    TRANSFORM-2, evaluating add-on parsaclisib in patients with myelofibrosis with sub-optimal response to ruxolitinib, is expected to read out in the second half of 2026.
    conf 85%via llm

MethodologyEvery catalyst date is anchored to a primary source. Disclosures with confidence ≥ 0.85 auto-publish; the rest are reviewed by a human within 24 hours. We never interpret data — we organize public information.

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