Last reviewed · How we verify

Branded Tacrolimus

Novartis · FDA-approved active Small molecule

Tacrolimus is a calcineurin inhibitor that suppresses T-cell activation by blocking the phosphatase calcineurin, preventing IL-2 production and T-cell proliferation.

Tacrolimus is a calcineurin inhibitor that suppresses T-cell activation by blocking the phosphatase calcineurin, preventing IL-2 production and T-cell proliferation. Used for Prevention of organ rejection in transplant recipients (kidney, heart, liver, pancreas), Atopic dermatitis, Severe rheumatoid arthritis.

At a glance

Generic nameBranded Tacrolimus
Also known asPrograf
SponsorNovartis
Drug classCalcineurin inhibitor
TargetCalcineurin (via FKBP12 binding)
ModalitySmall molecule
Therapeutic areaImmunology
PhaseFDA-approved

Mechanism of action

Tacrolimus binds to the immunophilin FKBP12, and this complex inhibits calcineurin phosphatase activity. By blocking calcineurin, it prevents dephosphorylation and nuclear translocation of NFAT (nuclear factor of activated T cells), thereby suppressing the transcription of IL-2 and other pro-inflammatory cytokines essential for T-cell activation and proliferation. This potent immunosuppression makes it effective in preventing organ rejection and treating autoimmune conditions.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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