Dabrafenib is metabolized in the liver. The biotransformation process of this drug is primarily regulated by _CYP2C8_ and _CYP3A4_ to form _hydroxy-debrafenib_. This metabolite is further oxidized via CYP3A4 to form _carboxy-dabrafenib_ and subsequently excreted in bile and urine. Carboxy-dabrafenib can also undergo decarboxylation to form _desmethyl-dabrafenib_, which may be reabsorbed from the gastrointestinal tract. _Desmethyl-dabrafenib_ is further metabolized by CYP3A4 to oxidative metabolites [L2711], [FDA label].
Elevations in serum ALT levels were reported in 11% of patients treated with dabrafenib alone, but all elevations were above 5 times ULN. When dabrafenib was given in combination with trametinib, serum ALT elevations occurred in 35% to 42% of patients and were above 5 times ULN in 4%. Similarly, serum alkaline phosphatase elevations occurred in 26% of patients given dabrafenib alone, but in 60% to 67% given dabrafenib and trametinib. These abnormalities were largely asymptomatic and fully reversible. There were no instances of clinically apparent acute liver injury or hepatic failure reported in prelicensure studies of dabrafenib and, since its approval and more wide spread use, there have been no published reports of dabrafenib hepatotoxicity.
LD50 in rats is > 2000 mg/kg [MSDS]. The most common side effects of Daretinib (Tafinlar) as a single agent include: hyperkeratosis, headache, pyrexia, arthralgia, papilloma, alopecia, and palmar-plantar erythrodysesthesia syndrome [FDA label]. The most common adverse reactions (≥20%) for Tafinlar in combination with [DB08911] are pyrexia, chills, fatigue, rash, nausea, vomiting, diarrhea, abdominal pain, peripheral edema, cough, headache, arthralgia, night sweats, decreased appetite, constipation, and myalgia [FDA label]. The following is a list of toxicities that may occur with the combination of Daretinib and [DB08911]: **New primary malignancies**: These may occur when Tafinlar is administered as a single agent or in combination with [DB08911]. Monitor patients for new malignancies prior to initiation of therapy, while on therapy, and following discontinuation of TAFINLAR or the combination therapy. Tumor Promotion in BRAF Wild-Type Melanoma: Increased cell proliferation can occur with BRAF inhibitors [FDA label]. **Hemorrhage:** Major hemorrhagic events can occur in patients receiving TAFINLAR in combination with trametinib. Monitor for signs and symptoms of bleeding [FDA label]. **Venous Thromboembolism**: Deep vein thrombosis and pulmonary embolism can occur in patients receiving the drug combination [FDA label]. **Cardiomyopathy **: Assess LVEF before treatment with TAFINLAR in combination with trametinib, after one month of treatment, then every 2 to 3 months thereafter [FDA label]. **Ocular toxicities**: Perform an ophthalmologic evaluation for any visual disturbances [FDA label]. **Serious Febrile Reactions:** Incidence and severity of pyrexia are increased with TAFINLAR in combination with trametinib [FDA label]. **Serious Skin Toxicity:** Monitor for skin toxicities and for secondary infections. Discontinue for intolerable Grade 2, or Grade 3 or 4 rash not improving within 3 weeks despite the interruption of TAFINLAR [FDA label]. **Hyperglycemia:** Monitor serum glucose levels in patients with pre-existing diabetes or hyperglycemia [FDA label]. **Glucose-6-Phosphate Dehydrogenase Deficiency**: Closely monitor for hemolytic anemia [FDA label]. **Embryofetal Toxicity**: Can cause fetal harm. Advise females of reproductive potential of potential risk to a fetus. TAFINLAR may render hormonal contraceptives less effective and an alternative method of contraception should be used [FDA label].
After oral administration, median time to achieve peak plasma concentration (Tmax) is 2 hours. Mean absolute bioavailability of oral dabrafenib is 95% [L2711].
Fecal excretion is the major route of elimination accounting for 71% of radioactive dose while urinary excretion accounted for 23% of total radioactivity as metabolites only [FDA label].
Apparent volume of distribution (Vd/F) = 70.3 L [FDA label]. Distribution to the brain is restricted because dabrafenib is a substrate and undergoes efflux by P-glycoprotein and breast cancer resistance protein [FDA label].
COMPOSITIONS FOR TREATMENT OF CYSTIC FIBROSIS AND OTHER CHRONIC DISEASES
申请人:Van Goor Fredrick F.
公开号:US20110098311A1
公开(公告)日:2011-04-28
The present invention relates to pharmaceutical compositions comprising an inhibitor of epithelial sodium channel activity in combination with at least one ABC Transporter modulator compound of Formula A, Formula B, Formula C, or Formula D. The invention also relates to pharmaceutical formulations thereof, and to methods of using such compositions in the treatment of CFTR mediated diseases, particularly cystic fibrosis using the pharmaceutical combination compositions.
The invention is directed to substituted benzothiadiazine derivatives. Specifically, the invention is directed to compounds according to Formula (I):wherein R, R1, R2, R3, R4 and R5 are as defined herein. The compounds of the invention are inhibitors of CD73 and can be useful in the treatment of cancer, pre-cancerous syndromes and diseases associated with CD73 inhibition, such as AIDS, autoimmune diseases, infections, atherosclerosis, and ischemia-reperfusion injury. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting CD73 activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
[EN] 5-SULFAMOYL-2-HYDROXYBENZAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS DE 5-SULFAMOYL-2-HYDROXYBENZAMIDE
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2017153952A1
公开(公告)日:2017-09-14
The invention is directed to substituted salicylamide derivatives. Specifically, the invention is directed to compounds according to Formula (I): wherein R, R1 and R2 are as defined herein, or a pharmaceutically acceptable salt thereof. The compounds of the invention are inhibitors of CD73 and can be useful in the treatment of cancer, pre-cancerous syndromes and diseases associated with CD73 inhibition, such as AIDS, the treatment of HIV, autoimmune diseases, infections, atherosclerosis, and ischemia–reperfusion injury. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting CD73 activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
[EN] SUBSTITUTED PYRIDINES AS INHIBITORS OF DNMT1<br/>[FR] PYRIDINES SUBSTITUÉES EN TANT QU'INHIBITEURS DE DNMT1
申请人:GLAXOSMITHKLINE IP DEV LTD
公开号:WO2017216726A1
公开(公告)日:2017-12-21
The invention is directed to substituted pyridine derivatives. Specifically, the invention is directed to compounds according to Formula (Iar): (Iar) wherein Yar, X1ar, X2ar, R1ar, R2ar, R3ar, R4ar and R5ar are as defined herein; or a pharmaceutically acceptable salt or prodrug thereof. The compounds of the invention are selective inhibitors of DNMT1 and can be useful in the treatment of cancer, pre-cancerous syndromes, beta hemoglobinopathy disorders, sickle cell disease, sickle cell anemia, and beta thalassemia, and diseases associated with DNMT1 inhibition. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting DNMT1 activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
[EN] (AZA)INDAZOLYL-ARYL SULFONAMIDE AND RELATED COMPOUNDS AND THEIR USE IN TREATING MEDICAL CONDITIONS<br/>[FR] (AZA) INDAZOLYL-ARYLE SULFONAMIDE ET COMPOSÉS APPARENTÉS ET LEUR UTILISATION DANS LE TRAITEMENT D'ÉTATS MÉDICAUX
申请人:HIBERCELL INC
公开号:WO2020210828A1
公开(公告)日:2020-10-15
The invention provides (aza)indazolyl-aryl sulfonamide and related compounds, pharmaceutical compositions, and their use in the treatment of medical conditions, such as cancer, and in inhibiting GCN2 activity.