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Tacrolimus capsule

Oslo University Hospital · FDA-approved active Small molecule

Tacrolimus inhibits calcineurin phosphatase, blocking T-cell activation and proliferation by preventing transcription of IL-2 and other cytokine genes.

Tacrolimus inhibits calcineurin phosphatase, blocking T-cell activation and proliferation by preventing transcription of IL-2 and other cytokine genes. Used for Organ transplant rejection prophylaxis (kidney, heart, liver, pancreas), Atopic dermatitis, Autoimmune conditions (off-label use in various settings).

At a glance

Generic nameTacrolimus capsule
Also known asTac-arm, Envarsus®XR., tacrobell tablet, Protopic®, Advagraf
SponsorOslo University Hospital
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, a serine/threonine phosphatase essential for dephosphorylating NFAT (nuclear factor of activated T cells). By preventing NFAT nuclear translocation, tacrolimus suppresses the transcription of interleukin-2 and other T-cell activation genes, resulting in potent immunosuppression. This mechanism makes it effective for 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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