Selpercatinib: uses, dosing, side effects & brands

The following clinically significant adverse reactions are described elsewhere in the labeling: Hepatotoxicity [see Warnings and Precautions ( 5.1 )] Interstitial Lung Disease / Pneumonitis [see Warnings and Precautions ( 5.2 )] Hypertension [see Warnings and Precautions ( 5.3 )] QT Interval Prolongation [see Warnings and Precautions ( 5.4 )] Hemorrhagic Events [see Warnings and Precautions ( 5.5 )] Hypersensitivity [see Warnings and Precautions ( 5.6 )] Tumor Lysis Syndrome [see Warnings and Precautions ( 5.7 )] Risk of Impaired Wound Healing [see Warnings and Precautions ( 5.8 )] Hypothyroidism [see Warnings and Precautions ( 5.9 )] Slipped Capital Femoral Epiphysis/Slipped Upper Femoral Epiphysis in Adolescent Patients [see Warnings and Precautions ( 5.11 )] The most common adverse reactions (≥25%) include: Adult patients with solid tumors: musculoskeletal pain, edema, diarrhea, fatigue, dry mouth, hypertension, abdominal pain, rash, nausea, constipation, cough, headache, vomiting, dyspnea, and hemorrhage. ( 6 ) Pediatric patients with solid tumors : musculoskeletal pain, diarrhea, nausea, hemorrhage, pyrexia, abdominal pain, headache, vomiting, fatigue, cough, rash, coronavirus infection, upper respiratory tract infection, and edema. ( 6 ) The most common Grade 3 or 4 laboratory abnormalities (≥5%) include: Adult patients with solid tumors: decreased lymphocytes, increased…

None. None. ( 4 )

Acid-Reducing Agents: Avoid coadministration. If coadministration cannot be avoided, take RETEVMO with food (with PPI) or modify its administration time (with H2 receptor antagonist or locally-acting antacid). ( 2.4 , 7.1 ) Strong and Moderate CYP3A Inhibitors: Avoid coadministration. If coadministration cannot be avoided, reduce the RETEVMO dose. ( 2.6 , 7.1 ) Strong and Moderate CYP3A Inducers: Avoid coadministration. ( 7.1 ) CYP2C8 and CYP3A Substrates: Avoid coadministration. If coadministration cannot be avoided, modify the substrate dosage as recommended in its product labeling. ( 7.2 ) Certain P-gp and BCRP Substrates: Avoid coadministration. If coadministration cannot be avoided, modify the substrate dosage as recommended in its product labeling. ( 7.2 ) 7.1 Effects of Other Drugs on RETEVMO Acid-Reducing Agents Concomitant use of RETEVMO with acid-reducing agents decreases selpercatinib plasma concentrations [see Clinical Pharmacology ( 12.3 )] , which may reduce RETEVMO anti-tumor activity. Avoid concomitant use of PPIs, H2 receptor antagonists, and locally-acting antacids with RETEVMO. If coadministration cannot be avoided, take RETEVMO with food (with a PPI) or modify its administration time (with a H2 receptor antagonist or a locally-acting antacid) [see Dosage and Administration ( 2.4 )] . Strong and Moderate CYP3A Inhibitors Concomitant use of RETEVMO with a strong or moderate CYP3A inhibitor increases selpercatinib plasma concentrations [see Clinical Pharmacology ( 12.3 )] , which may increase the risk of RETEVMO adverse reactions, including QTc interval prolongation. Avoid concomitant use of strong and moderate CYP3A inhibitors with RETEVMO. If concomitant use of strong and moderate CYP3A inhibitors cannot be avoided, reduce the RETEVMO dosage and monitor the QT interval with ECGs more frequently [see Dosage and Administration ( 2.6 ), Warnings and Precautions ( 5.4 )] . Strong and Moderate CYP3A Inducers Concomitant use of RETEVMO with a strong or moderate CYP3A inducer decreases selpercatinib plasma concentrations [see Clinical Pharmacology ( 12.3 )] , which may reduce RETEVMO anti-tumor activity. Avoid coadministration of strong or moderate CYP3A inducers with RETEVMO. 7.2 Effects of RETEVMO on Other Drugs CYP2C8 and CYP3A Substrates RETEVMO is a moderate CYP2C8 inhibitor and a weak CYP3A inhibitor. Concomitant use of RETEVMO with CYP2C8 and CYP3A substrates increases their plasma concentrations [see Clinical Pharmacology ( 12.3 )] , which may increase the risk of adverse reactions related to these substrates. Avoid coadministration of RETEVMO with CYP2C8 and CYP3A substrates where minimal concentration changes may lead to increased adverse reactions. If coadministration cannot be avoided, follow recommendations for CYP2C8 and CYP3A substrates provided in their approved product labeling. Certain P-gp and BCRP Substrates RETEVMO is a P-gp and BCRP inhibitor. Concomitant use of RETEVMO with P-gp or BCRP substrates increases their plasma concentrations [see Clinical Pharmacology ( 12.3 )] , which may increase the risk of adverse reactions related to these substrates. Avoid coadministration of RETEVMO with P-gp or BCRP substrates where minimal concentration changes may lead to increased adverse reactions. If coadministration cannot be avoided, follow recommendations for P-gp and BCRP substrates provided in their approved product labeling. 7.3 Drugs that Prolong QT Interval RETEVMO is associated with QTc interval prolongation [see Warnings and Precautions ( 5.4 ), Clinical Pharmacology ( 12.2 )] . Monitor the QT interval with ECGs more frequently in patients who require treatment with concomitant medications known to prolong the QT interval.