Head-to-head evidence

infliximab vs infliximab-dyyb (Zymfentra)

Same mechanism, same race: design-graded trial evidence for both assets, with the grading rationale shown. Grades describe the quality of the evidence, never the merits of either security.

Ulcerative Colitis

Shared mechanism: TNF-alpha · full Ulcerative Colitis pipeline

infliximab · Remicade

Marketed by Johnson & Johnson and partners

Approved in Ulcerative Colitismonoclonal antibody (chimeric IgG1)
Reliable signal

NCT04205643 · Phase 3 · completed

Randomized, quadruple-blinded, placebo-controlled, adequately powered (n=438 randomized into maintenance phase) Phase 3 trial with a hard clinical endpoint (clinical remission by modified Mayo score) that reached statistical significance in the favorable direction, satisfying the 'strong' definition.

Next expected readout: December 2026 · NCT06839820 (registry estimate)

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infliximab-dyyb (Zymfentra)

Marketed by Celltrion

Approved in Ulcerative Colitis
Reliable signal

NCT04205643 · Phase 3 · completed

The trial was randomized, quadruple-blind, and placebo-controlled, with 548 participants enrolled and 438 participants included in the reported maintenance analysis. The hard clinical primary endpoint—clinical remission by the modified Mayo score at week 54—was met, with 127 of 294 participants receiving CT-P13 versus 30 of 144 receiving placebo (p<0.0001).

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Crohn's Disease

Shared mechanism: TNF-alpha · full Crohn's Disease pipeline

infliximab · Remicade

Marketed by Johnson & Johnson and partners

Approved in Crohn's Diseasemonoclonal antibody (chimeric IgG1)
Reliable signal

NCT00094458 · Phase 3 · completed

This meets the 'strong' test: randomized, triple-blinded (participant/investigator/outcomes assessor), active-comparator (not merely placebo) design, adequately powered (n=508), a primary endpoint that is a hard clinical measure (corticosteroid-free clinical remission via CDAI), and the primary comparisons reached statistical significance in the favorable direction for the key comparisons (combo vs AZA and IFX vs AZA).

Next expected readout: October 2026 · NCT05043870 (registry estimate)

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infliximab-dyyb (Zymfentra)

Marketed by Celltrion

Approved in Crohn's Disease
Reliable signal

NCT03945019 · Phase 3 · completed

This was a randomized, quadruple-blind, placebo-controlled trial with 396 participants entering induction and 343 entering the randomized maintenance comparison (231 receiving CT-P13 SC and 112 placebo). Both prespecified primary endpoints—CDAI-based clinical remission and endoscopic response at week 54—were met, with each comparison reported as p<0.0001.

Next expected readout: December 2026 · NCT06064864 (registry estimate)

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The full competitive landscape for each asset (every same-race competitor with aligned evidence, sortable) is on the asset pages: infliximab's landscape · infliximab-dyyb (Zymfentra)'s landscape