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natalizumab SC

Biogen · Phase 2 active Small molecule ✓ Verified Jun 2026

natalizumab SC is a Small molecule drug developed by Biogen. It is currently in Phase 2 development. Also known as: Tysabri, BG00002.

Natalizumab SC is an integrin alpha-4/beta-7 inhibitor used to treat multiple sclerosis, including relapsing-remitting and secondary progressive forms. It is a monoclonal antibody that works by inhibiting the integrin alpha-4/beta-7, a protein involved in the immune system.

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
    Biogen 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 namenatalizumab SC
Also known asTysabri, BG00002
SponsorBiogen
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 natalizumab SC

What is natalizumab SC?

natalizumab SC is a Small molecule drug developed by Biogen.

Who makes natalizumab SC?

natalizumab SC is developed by Biogen (see full Biogen pipeline at /company/biogen).

Is natalizumab SC also known as anything else?

natalizumab SC is also known as Tysabri, BG00002.

What development phase is natalizumab SC in?

natalizumab SC is in Phase 2.

Related

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