Ruxolitinib
Ruxolitinib was the first JAK inhibitor: it shrinks the spleen and relieves symptoms in myelofibrosis and controls blood counts in polycythaemia vera, without eliminating the disease clone.
COMFORT-I/II (2011) showed spleen volume and symptom benefit versus placebo/best available therapy with a later-demonstrated survival advantage; RESPONSE (2014) established it in hydroxyurea-resistant PV. Also approved in acute and chronic graft-versus-host disease (REACH2/3). Anaemia, thrombocytopenia, infections and a discontinuation syndrome are the main issues.
- Medicare
- Part D (self-administered)
Oral, self-administered, so it is a Part D drug: covered through a stand-alone Part D plan or Medicare Advantage drug benefit, usually on the specialty tier with 25 to 33% coinsurance until the annual cap ($2,000 in 2025, $2,100 in 2026). Jakafi is a Part D specialty drug; generic entry is not expected before 2028.
- Commercial insurance
- covered with prior authorisation
Covered for FDA-labelled and NCCN-listed uses, but almost always behind prior authorisation confirming diagnosis, biomarker and line of therapy; dispensed through a specialty pharmacy.
- Assistance programmes
- IncyteCARES
- PAN Foundation — Disease-specific co-pay and premium funds; open and closed funds change monthly.
- HealthWell Foundation
- CancerCare Co-Payment Assistance Foundation
- Patient Advocate Foundation Co-Pay Relief
- Leukemia & Lymphoma Society financial support
Part D out-of-pocket capped at $2,000 (2025) / $2,100 (2026). Medicare patients cannot use manufacturer co-pay cards; charity funds (PAN, HealthWell, CancerCare) and the Extra Help subsidy are the routes.
Sources: Medicare.gov: Drug coverage (Part D) · Medicare.gov: Costs for Medicare drug coverage (annual out-of-pocket cap). Not medical or financial advice; verify with your plan.
- Appraised for
- Disease-related splenomegaly or symptoms in myelofibrosis (intermediate-2 or high risk)
- Notes
- Polycythaemia vera resistant or intolerant to hydroxycarbamide appraised 2023. Steroid-refractory acute and chronic GVHD appraised 2023-24.
- NHS England
- Routinely funded for the appraised indication (or via managed access)
Sources: NICE TA386 · SMC advice: ruxolitinib. Funding decisions are indication-specific and change monthly; verify with NICE and your treating team.
Approvals
| Region | Year | Indication |
|---|---|---|
| US | 2011 | Intermediate/high-risk myelofibrosis |
| US | 2014 | Polycythaemia vera after hydroxyurea |
| US | 2019 | Steroid-refractory acute GVHD |
| US | 2021 | Chronic GVHD after failure of 1-2 lines |
| EU | 2012 | Myelofibrosis |
Trials
topRecruiting now (live from ClinicalTrials.gov)
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MOMENTUM addressed the biggest gap left by ruxolitinib: patients whose anaemia makes standard JAK inhibition hard to give. Momelotinib is now the preferred option for anaemic, previously treated myelofibrosis and is being adopted in first line for anaemic patients. The absolute symptom benefit is modest and durable disease modification has not been shown.
COMFORT-I turned the 2005 discovery of the JAK2 V617F mutation into the first effective medicine for myelofibrosis, transforming symptom control for a disease with no prior standard. Ruxolitinib is still the reference first-line therapy, with fedratinib, pacritinib and momelotinib as alternatives for cytopenic patients. It does not eliminate the malignant clone or reverse fibrosis in most patients.
Latest papers
topQuery for this drug: (TITLE:"Ruxolitinib" OR ABSTRACT:"Ruxolitinib" OR TITLE:"Jakafi" OR ABSTRACT:"Jakafi" OR TITLE:"Jakavi" OR ABSTRACT:"Jakavi") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about Ruxolitinib, not a curated reading list.
Pages like this
not linked directly; found by shared links- ProductPacritinib
Shares MOMENTUM: momelotinib versus danazol for myelofibrosis patients with anaemia after a prior JAK inhibitor, COMFORT-I: ruxolitinib, the first JAK inhibitor, versus placebo for myelofibrosis, JAK2, Myeloproliferative neoplasms (PV, ET, myelofibrosis) and the tag gap-fill.
- ProductMomelotinib
Shares MOMENTUM: momelotinib versus danazol for myelofibrosis patients with anaemia after a prior JAK inhibitor, COMFORT-I: ruxolitinib, the first JAK inhibitor, versus placebo for myelofibrosis, JAK2, Myeloproliferative neoplasms (PV, ET, myelofibrosis) and the tag gap-fill.
- ProductFedratinib
Shares COMFORT-I: ruxolitinib, the first JAK inhibitor, versus placebo for myelofibrosis, JAK2, Myeloproliferative neoplasms (PV, ET, myelofibrosis), Small-molecule kinase inhibitors and the tag gap-fill.
- ProductRopeginterferon alfa-2b
Shares JAK2, Myeloproliferative neoplasms (PV, ET, myelofibrosis) and the tag gap-fill.
- ProductSonidegib
Shares Fibroblast activation, desmoplasia & matrix stiffness, Small-molecule kinase inhibitors and the tag gap-fill.
- ProductCeritinib
Shares Novartis, Small-molecule kinase inhibitors and the tag gap-fill.
- ProductVismodegib
Shares Fibroblast activation, desmoplasia & matrix stiffness, Small-molecule kinase inhibitors and the tag gap-fill.
- ProductRetifanlimab
Shares Incyte and the tag gap-fill.