PEXIDARTINIB CAP,ORAL
Clinical Criteria Summary
Exclusion Criteria
- Baseline ALT, AST, total bilirubin, or direct bilirubin > ULN (local laboratory reference values)
- Active liver or biliary tract disease, including increased alkaline phosphatase (ALP)
- Active or chronic hepatitis B viral infection
- Active or chronic hepatitis C viral infection
- Known active or chronic HIV infection
- Concomitant use of strong CYP3A inducers
- Concomitant use of proton pump inhibitors
- Concomitant use of hormonal contraceptives (CYP3A substrate), unless another highly effective nonhormonal contraception is used in combination
- Concomitant use of other CYP3A substrates when minimal decreases in drug concentration can result in serious therapeutic failures
- Unwilling or unable to comply with recommended laboratory monitoring
- Breastfeeding
Inclusion Criteria
- Care provided by a VA/VA Community Care oncologist or locally designated expert
- Histologically confirmed, symptomatic, nonmetastatic TGCT, including pigmented villonodular synovitis (PVNS) and giant cell tumor of the tendon sheath (GCT-TS)
- TGCT is associated with severe morbidity or functional limitations
- TGCT is not amenable to improvement with surgery, or surgical resection is likely to be associated with potentially worse functional limitation or severe morbidity
- No improvement after 12 weeks of imatinib, disease progression despite imatinib, or imatinib is medically inadvisable (e.g., contraindication, unmanageable toxicity, etc.)
Dosing, Monitoring, and Program Requirements
- Prescribed at the FDA-approved dose for TGCT, modified as recommended for moderate or strong CYP3A inhibitors and UGT inhibitors (if unavoidable), and for mild to severe renal impairment (CrCl 15–89 mL/min)
- Pregnancy excluded in the previous 14 days for women of childbearing potential and men who partner with women of childbearing potential
- Patient counseled on use of highly effective contraception and risks/benefits of treatment
- Prescriber must be certified; patient must be enrolled in the TURALIO REMS program
- Use without a prior trial of imatinib requires case-by-case request following a risk-benefit discussion between the patient and provider