Last reviewed · How we verify

Ofatumumab 300

GlaxoSmithKline · Phase 2 active Small molecule ✓ Verified May 2026

Ofatumumab 300 is a Small molecule drug developed by GlaxoSmithKline. It is currently in Phase 2 development.

Ofatumumab is a binding agent that targets the B-lymphocyte antigen CD20. It is used to treat conditions such as Chronic Lymphocytic Leukemia (CLL) and Relapsed or Refractory Chronic Lymphocytic Leukemia.

Likelihood of approval
18.3% vs 15.3% industry baseline
If approved by FDA: likely 2031–2034
Steps remaining: Phase 3 → NDA/BLA submission
Confidence: Medium
Why this estimate
  • Baseline phase 2 → approval rate +15.3pp
    Industry-wide phase 2 drugs reach approval ~15.3% of the time (BIO/Informa 2023 industry benchmark across all therapeutic areas).
  • Big-pharma sponsor +3.0pp
    GlaxoSmithKline 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 2031–2034
EMA EU 2032–2035 +0.7 yr
MHRA GB 2032–2035 +0.7 yr
Health Canada CA 2032–2036 +0.9 yr
TGA AU 2032–2036 +1.2 yr
PMDA JP 2032–2036 +1.5 yr
NMPA CN 2033–2037 +2.3 yr
MFDS KR 2032–2036 +1.4 yr
CDSCO IN 2032–2037 +1.8 yr
ANVISA BR 2033–2037 +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 nameOfatumumab 300
SponsorGlaxoSmithKline
ModalitySmall molecule
PhasePhase 2

Approved indications

No approved indications tracked.

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 Ofatumumab 300

What is Ofatumumab 300?

Ofatumumab 300 is a Small molecule drug developed by GlaxoSmithKline.

Who makes Ofatumumab 300?

Ofatumumab 300 is developed by GlaxoSmithKline (see full GlaxoSmithKline pipeline at /company/gsk).

What development phase is Ofatumumab 300 in?

Ofatumumab 300 is in Phase 2.

Related

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