DermRx.
← All drugs

guselkumab

Tremfya

Modality
mAb (human IgG1)
Mechanism
IL-23 p19 subunit inhibitor
Targets
IL-23 (p19)
Storage
refrigerated 2–8 °C
Approved
plaque psoriasis — FDA 2017 · psoriatic arthritis — FDA 2020 · ulcerative colitis — FDA 2024
In trial
hidradenitis suppurativa
Monitoring
TB pre-treatment
Sources
DailyMed (FDA label)DrugBankClinicalTrials.gov
Last verified
2026-04-14
No curated MOA diagram yet. See lib/moa-data.ts for the shape; add an entry keyed by guselkumab.

Monitoring & workup

Baseline workup

  • •TB IGRA (or PPD)
  • •HBV sAg if high risk; HCV Ab if high risk
  • •Update age-appropriate vaccines before start

Ongoing monitoring

  • •No routine labs
  • •Annual TB screening if high exposure risk
  • •IL-17 class: monitor for candida overgrowth + IBD flare
  • •IL-23 class: monitor for injection-site reactions