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Invossa K Inj.

Kolon Life Science · Phase 3 active Biologic ✓ Verified May 2026

Invossa K Inj. is a Gene therapy (cell-based) Biologic drug developed by Kolon Life Science. It is currently in Phase 3 development for Osteoarthritis of the knee (Phase 3).

Invossa K is a gene therapy that delivers TGF-β1 to stimulate cartilage regeneration and reduce joint degeneration in osteoarthritis.

Invossa K Inj. is a protein-based treatment used to study the safety and effectiveness in patients with osteoarthritis. It is being evaluated in a post-marketing surveillance study, NCT03412864, conducted by Kolon Life Science.

Likelihood of approval
59.3% vs 58.3% industry baseline
If approved by FDA: likely 2028–2030
Steps remaining: NDA/BLA submission
Confidence: High
Why this estimate
  • Baseline phase 3 → approval rate +58.3pp
    Industry-wide phase 3 drugs reach approval ~58.3% 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.
Predicted approval windows by jurisdiction (conditional on FDA approval)
Regulator Country Likely year Lag vs FDA
FDA US 2028–2030
EMA EU 2029–2031 +0.7 yr
MHRA GB 2029–2031 +0.7 yr
Health Canada CA 2029–2032 +0.9 yr
TGA AU 2029–2032 +1.2 yr
PMDA JP 2029–2032 +1.5 yr
NMPA CN 2030–2033 +2.3 yr
MFDS KR 2029–2032 +1.4 yr
CDSCO IN 2029–2033 +1.8 yr
ANVISA BR 2030–2033 +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 nameInvossa K Inj.
SponsorKolon Life Science
Drug classGene therapy (cell-based)
TargetTGF-β1 (transforming growth factor-beta 1)
ModalityBiologic
Therapeutic areaOrthopedics / Rheumatology
PhasePhase 3

Mechanism of action

Invossa K uses an allogeneic human chondrocyte cell line transduced with a retroviral vector carrying the TGF-β1 gene. When injected into the knee joint, these modified cells produce TGF-β1 locally, which promotes cartilage matrix synthesis and reduces inflammatory responses, thereby slowing or reversing osteoarthritic damage.

Approved indications

Common side effects

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 Invossa K Inj.

What is Invossa K Inj.?

Invossa K Inj. is a Gene therapy (cell-based) drug developed by Kolon Life Science, indicated for Osteoarthritis of the knee (Phase 3).

How does Invossa K Inj. work?

Invossa K is a gene therapy that delivers TGF-β1 to stimulate cartilage regeneration and reduce joint degeneration in osteoarthritis.

What is Invossa K Inj. used for?

Invossa K Inj. is indicated for Osteoarthritis of the knee (Phase 3).

Who makes Invossa K Inj.?

Invossa K Inj. is developed by Kolon Life Science (see full Kolon Life Science pipeline at /company/kolon-life-science).

What drug class is Invossa K Inj. in?

Invossa K Inj. belongs to the Gene therapy (cell-based) class. See all Gene therapy (cell-based) drugs at /class/gene-therapy-cell-based.

What development phase is Invossa K Inj. in?

Invossa K Inj. is in Phase 3.

What are the side effects of Invossa K Inj.?

Common side effects of Invossa K Inj. include Joint pain or swelling, Injection site reactions, Transient fever or systemic inflammation.

What does Invossa K Inj. target?

Invossa K Inj. targets TGF-β1 (transforming growth factor-beta 1) and is a Gene therapy (cell-based).

Related

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