Overview
11 DESCRIPTION THALOMID, α-(N-phthalimido) glutarimide, is an immunomodulatory agent. The empirical formula for thalidomide is C 13 H 10 N 2 O 4 and the gram molecular weight is 258.2. The CAS number of thalidomide is 50-35-1. Chemical Structure of Thalidomide Note: ∙ = asymmetric carbon atom Thalidomide is an off-white to white, odorless, crystalline powder that is soluble at 25°C in dimethyl...
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action The mechanism of action of THALOMID is not fully understood. Cellular activities of thalidomide are mediated through its target cereblon, a component of a cullin ring E3 ubiquitin ligase enzyme complex. THALOMID possesses immunomodulatory, anti-inflammatory and antiangiogenic properties. Available data from in vitro studies and clinical trials suggest that the immunologic effects of this compound can vary substantially under different conditions, but may be related to suppression of excessive tumor necrosis factor-alpha (TNF-α) production and down-modulation of selected cell surface adhesion molecules involved in leukocyte migration.
Indications
- 1 INDICATIONS AND USAGE • THALOMID in combination with dexamethasone is indicated for the treatment of patients with newly diagnosed multiple myeloma (MM). ( 1.1 ) • THALOMID is indicated for the acute treatment of the cutaneous manifestations of moderate to severe erythema nodosum leprosum (ENL). THALOMID is not indicated as monotherapy for such ENL treatment in the presence of moderate to severe neuritis. THALOMID is also indicated as maintenance therapy for prevention and suppression of the cutaneous manifestations of ENL recurrence. ( 1.2 ) 1.
Common Doses
- 200 mg
- 40 mg
- 300 mg
- 400 mg
Dosage
2 DOSAGE AND ADMINISTRATION • MM: 200 mg orally once daily. The recommended dose of dexamethasone is 40 mg/day on days 1-4, 9-12, and 17-20 every 28 days. ( 2.2 ) • ENL: 100 to 300 mg/day for an episode of cutaneous ENL. Up to 400 mg/day for severe cutaneous ENL. ( 2.3 ) 2.1 Required Baseline Testing Drug prescribing to females of reproductive potential is contingent upon initial and continued negative results of pregnancy testing [see Warnings and Precautions (5.1 and 5.2) ] . THALOMID must only be administered in compliance with all of the terms outlined in the THALOMID REMS program.
Black Box Warning
WARNING: EMBRYO-FETAL TOXICITY AND VENOUS THROMBOEMBOLISM WARNING: EMBRYO-FETAL TOXICITY AND VENOUS THROMBOEMBOLISM See full prescribing information for complete boxed warning. EMBRYO -FETAL TOXICITY • If THALOMID is taken during pregnancy, it can cause severe birth defects or embryo-fetal death. THALOMID should never be used by females who are pregnant or who could be pregnant while taking the drug. Even a single dose [1 capsule (regardless of strength)] taken by a pregnant woman during her pregnancy can cause severe birth defects. • Pregnancy must be excluded before start of treatment.
Contraindications
- 4 CONTRAINDICATIONS • Pregnancy ( Boxed Warning , 4.1 , 5.1 , 5.2 , 8.1 , 17 ) • Demonstrated hypersensitivity to the drug or its components ( 4.2 , 5.16 , 6.2 ) 4.1 Pregnancy THALOMID is contraindicated in females who are pregnant. THALOMID can cause fetal harm when administered to a pregnant female [see Boxed Warning , Warnings and Precautions (5.1) and Use in Specific Populations (8.1) ] . THALOMID is a powerful human teratogen, inducing a high frequency of severe and life-threatening birth defects, even after a single dose [see Boxed Warning ] .
Side Effects
- 6 ADVERSE REACTIONS The following clinically significant adverse reactions are described in detail in other labeling sections: • Teratogenicity [see Boxed Warning , Warnings and Precautions (5.1 , 5.2) , and Patient Counseling Information (17) ] • Venous and Arterial Thromboembolism [see Boxed Warning , Warnings and Precautions (5.3) , and Patient Counseling Information (17) ] • Increased Mortality in Patients with MM When Pembrolizumab Is Added to a Thalidomide Analogue and Dexamethasone [see Warnings and Precautions (5.4) ] • Drowsiness and Somnolence [see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS • Use caution if other drugs which have sedative and hypnotic properties, slow cardiac conduction and/or cause peripheral neuropathy must be used. ( 7.1 , 7.2 , 7.3 ) • It is not known whether concomitant use of hormonal contraceptives further increases the risk of thromboembolism with THALOMID. ( 5.15 , 7.4 ) • Patients taking concomitant therapies such as erythropoietin stimulating agents or estrogen containing therapies may have an increased risk of thromboembolism. ( 7.7 ) 7.