DDInter734 DDInter53
Fidaxomicin is a novel macrolide antibiotic used in the treatment of diarrhea caused by _Clostridioides_ (formerly _Clostridium_) _difficile_ in adult and pediatric patients over the age of 6 months. Fidaxomicin is a naturally-occurring 18-member macrocycle derived from fermentation. Because fidaxomicin contains an 18-membered lactone ring in its structure, it is referred to as a macrocyclic lactone antibiotic drug. The antibacterial activity of fidaxomicin is distinct from macrolides and rifamycins, as the bactericidal activity is time-dependent, and not concentration-dependent. Fidaxomicin was the first macrocyclic lactone antibiotic with activity against _C. difficile_, and it displays a narrow spectrum of activity against gram-positive anaerobes. It mediates its potent bactericidal action on the bacteria by inhibiting the bacterial RNA synthase
Alpelisib is a phosphatidylinositol 3-kinase (PI3K) inhibitor with potent antitumor activity. It works by selectively inhibiting class I PI3K p110α , which is the catalytic subunit of PI3K, a lipid kinase that plays a role in various biological processes, including proliferation, survival, differentiation, and metabolism. Alpelisib was designed to target this enzyme that appears to be mutated at a rate of nearly 30% in human cancers, leading to hyperactivation. There are several isoform-specific PI3K inhibitors that are under clinical development or currently approved, such as [idelalisib] used for chronic lymphocytic leukemia (CLL). Approved by the FDA in May 2019, alpelisib is the first approved PI3K inhibitor indicated for the treatment of hormone receptor (HR)-positive, human epidermal growth factor receptor 2 (HER2)-negative, PIK3CA-mutated, advanced or metastatic breast cancer in combination with [fulvestrant] for postmenopausal women and male patients. To initiate alpelisib therapy, it is required that the presence of a PIK3CA mutation in the tissue and/or liquid biopsy sample collection should be confirmed via FDA-approved diagnostic tests. Alpelisib is marketed under the trade name Piqray and is available as oral tablets. Studies evaluating the therapeutic effectiveness of alpelisib in other cancers, such as ovarian cancer and colorectal cancer , are under ongoing investigations. Alpelisib was granted FDA approval on 24 May 2019. In April 2022, the FDA granted the use of alpelisib in the treatment of PIK3CA-Related Overgrowth Spectrum (PROS) in adults and children who require systemic therapy.
Fidaxomicin {u} (Compound) binds {v} (Gene) ABCB1
ABCB1 {u} (Gene) is bound by {v} (Compound) Sirolimus
Sirolimus {u} may cause a moderate interaction that could exacerbate diseases when taken with {v} Alpelisib
Fidaxomicin {u} (Compound) causes {v} (Side Effect) Flatulence
Flatulence {u} (Side Effect) is caused by {v} (Compound) Doxepin
Doxepin {u} may cause a moderate interaction that could exacerbate diseases when taken with {v} Alpelisib
Fidaxomicin {u} (Compound) causes {v} (Side Effect) Nervous system disorder
Nervous system disorder {u} (Side Effect) is caused by {v} (Compound) Phenytoin
Phenytoin {u} may lead to a major life threatening interaction when taken with {v} Alpelisib
Fidaxomicin {u} (Compound) binds {v} (Gene) ABCB1
ABCB1 {u} (Gene) is bound by {v} (Compound) Phenobarbital
Phenobarbital {u} may lead to a major life threatening interaction when taken with {v} Alpelisib
Fidaxomicin (Compound) binds ABCB1 (Gene) and ABCB1 (Gene) is bound by Sirolimus (Compound) and Sirolimus may cause a moderate interaction that could exacerbate diseases when taken with Alpelisib
Fidaxomicin (Compound) causes Flatulence (Side Effect) and Flatulence (Side Effect) is caused by Doxepin (Compound) and Doxepin may cause a moderate interaction that could exacerbate diseases when taken with Alpelisib
Fidaxomicin (Compound) causes Nervous system disorder (Side Effect) and Nervous system disorder (Side Effect) is caused by Phenytoin (Compound) and Phenytoin may lead to a major life threatening interaction when taken with Alpelisib
Fidaxomicin (Compound) binds ABCB1 (Gene) and ABCB1 (Gene) is bound by Phenobarbital (Compound) and Phenobarbital may lead to a major life threatening interaction when taken with Alpelisib