Novartis’ Remibrutinib Wins CHMP Positive Opinion – Oral BTK Inhibitor Nears EU Approval for Chronic Urticaria

Novartis' Remibrutinib Wins CHMP Positive Opinion – Oral BTK Inhibitor Nears EU Approval for Chronic Urticaria

Novartis (NYSE: NVS) announced that the Committee for Medicinal Products for Human Use (CHMP) of the European Medicines Agency (EMA) has adopted a positive opinion recommending marketing authorization for remibrutinib as an oral treatment for chronic spontaneous urticaria (CSU) in adult patients with inadequate response to H1‑antihistamines. The European Commission (EC) is expected to issue a final decision within approximately two months, following prior approvals in the US and China under the brand name Rhapsido.

Regulatory Milestone

ItemDetail
CompanyNovartis (NYSE: NVS)
ProductRemibrutinib (Rhapsido in US/China)
Drug ClassHighly selective oral BTK inhibitor
Regulatory BodyEMA CHMP (positive opinion); EC (final decision pending)
IndicationChronic spontaneous urticaria (CSU)
Patient PopulationAdults with inadequate H1‑antihistamine response
Prior ApprovalsUS and China (brand name: Rhapsido)
EU TimelineFinal EC decision expected ~ 2 months

Clinical Evidence – REMIX Phase III Trials

EndpointRemibrutinib Performance
Onset of ActionImprovements in itch and hives as early as Week 1
Sustained EfficacyBenefits maintained through Week 52
Quality of LifeEarly improvement observed
SleepEarly improvement observed
Safety/TolerabilityWell tolerated; no liver safety concerns through Week 52

Mechanism of Action

ComponentFunction
TargetBTK (Bruton’s tyrosine kinase)
PathwayBTK‑mediated histamine release from mast cells
MechanismBlocks BTK → reduces histamine release → relieves CSU symptoms (itch, hives)
SelectivityHighly selective BTK inhibition (vs. other kinases)
AdministrationOral (convenience advantage vs. injectable biologics)

Strategic Implications

  • CSU Unmet Need: Chronic spontaneous urticaria affects millions globally; ~ 50% of patients have inadequate response to H1‑antihistamines, creating demand for next‑line oral and biologic therapies.
  • BTK Inhibitor Differentiation: Remibrutinib is the first oral BTK inhibitor approved for CSU, competing with injectable biologics (Xolair/omalizumab) and offering patient convenience and lower cost‑of‑goods.
  • Liver Safety Profile: No liver safety concerns through 52 weeks differentiates remibrutinib from earlier‑generation BTK inhibitors (ibrutinib, zanubrutinib) with hepatotoxicity signals.
  • Global Launch Momentum: US and China approvals (as Rhapsido) preceded EU opinion; coordinated global rollout supports franchise value maximization and competitive positioning vs. pipeline BTK inhibitors.

Market Context

FactorImpact
CSU Market Size~ $2 billion globally; growing recognition of disease burden and treatment gaps
Treatment ParadigmH1‑antihistamines → add‑on therapies (remibrutinib, Xolair) → immunosuppressants; oral BTK positions between antihistamines and biologics
Competitive LandscapeBiohaven’s riliprubart (BTK inhibitor) in development; remibrutinib first‑to‑market advantage critical
Novartis ImmunologyAdds to Xolair franchise; remibrutinib provides oral alternative for CSU patients not requiring biologic intensity

Forward‑Looking Statements
This brief contains forward‑looking statements regarding EC final approval, commercial launch timelines, and market share capture in EU CSU market. Actual results may differ due to risks including reimbursement negotiations, competitive BTK inhibitor launches, and long‑term safety monitoring requirements.-Fineline Info & Tech