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Tofacitinib XR (tofacitinib-xr)

Pfizer Inc. · preclinical active ✓ Verified May 2026 Quality 50/100

Tofacitinib XR (generic name: tofacitinib-xr) is a JAK inhibitor drug developed by Pfizer Inc.. It is currently in preclinical development for Rheumatoid Arthritis.

Tofacitinib XR is a small molecule used to treat various inflammatory conditions, including Chronic Granulomatous Disease, Inflammatory Gastrointestinal Disease, Inflammatory Skin Disease, Inflammatory Lung Disease, and Cutaneous Lupus. It is administered as an extended-release formulation of tofacitinib, a medication that has been studied in clinical trials for its safety and efficacy in treating these conditions.

Likelihood of approval
9% vs 5% industry baseline
If approved by FDA: likely 2036–2040
Steps remaining: Phase 1 → Phase 2 → Phase 3 → NDA/BLA submission
Confidence: Low
Why this estimate
  • Baseline preclinical → approval rate +5.0pp
    Industry-wide preclinical drugs reach approval ~5% of the time (BIO/Informa 2023 industry benchmark across all therapeutic areas).
  • Immunology slight uplift +1.0pp
    Mature endpoint landscape (ACR, DAS28, PASI) makes immunology approvals slightly more predictable.
  • Big-pharma sponsor +3.0pp
    Pfizer Inc. is a top-20 pharma sponsor — historical approval rates run ~3pp above average due to scale, regulatory experience, and trial-design quality.
Predicted approval windows by jurisdiction (conditional on FDA approval)
Regulator Country Likely year Lag vs FDA
FDA US 2036–2040
EMA EU 2037–2041 +0.7 yr
MHRA GB 2037–2041 +0.7 yr
Health Canada CA 2037–2042 +0.9 yr
TGA AU 2037–2042 +1.2 yr
PMDA JP 2037–2042 +1.5 yr
NMPA CN 2038–2043 +2.3 yr
MFDS KR 2037–2042 +1.4 yr
CDSCO IN 2037–2043 +1.8 yr
ANVISA BR 2038–2043 +2.3 yr

Hover any row for the lag rationale. Lag estimates are reduced when the drug has FDA Breakthrough or EMA PRIME designation (sponsors file globally in parallel).

Estimate based on the BIO/Informa industry phase transition rates plus per-drug modifiers for therapeutic area, sponsor type, FDA designations, mechanism, and trial design. Per-jurisdiction lags from Tufts CSDD international approval studies. Not investment, clinical or regulatory advice. Methodology: /methodology#likelihood.

At a glance

Generic nametofacitinib-xr
SponsorPfizer Inc.
Drug classJAK inhibitor
TargetJAK1, JAK2, JAK3, TYK2
Therapeutic areaImmunology
Phasepreclinical

Approved indications

Pipeline indications

Common side effects

No common side effects on file.

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape:

Frequently asked questions about Tofacitinib XR

What is Tofacitinib XR?

Tofacitinib XR (tofacitinib-xr) is a JAK inhibitor drug developed by Pfizer Inc., indicated for Rheumatoid Arthritis.

What is Tofacitinib XR used for?

Tofacitinib XR is indicated for Rheumatoid Arthritis.

Who makes Tofacitinib XR?

Tofacitinib XR is developed by Pfizer Inc. (see full Pfizer Inc. pipeline at /company/pfizer).

What is the generic name of Tofacitinib XR?

tofacitinib-xr is the generic (nonproprietary) name of Tofacitinib XR.

What drug class is Tofacitinib XR in?

Tofacitinib XR belongs to the JAK inhibitor class. See all JAK inhibitor drugs at /class/jak-inhibitor.

What development phase is Tofacitinib XR in?

Tofacitinib XR is in preclinical.

What does Tofacitinib XR target?

Tofacitinib XR targets JAK1, JAK2, JAK3, TYK2 and is a JAK inhibitor.

Related

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing