Rucaparib phosphateProduct ingredient for Rucaparib

Name
Rucaparib phosphate
Drug Entry
Rucaparib

Rucaparib is a potent mammalian poly(ADP-ribose) polymerase (PARP) 1, 2 and 3 inhibitor with anticancer properties. PPAR is an enzyme that plays an essential role in DNA repair by activating response pathways and facilitating repair 2, and defects in these repair mechanisms have been demonstrated in various malignancies, including cancer. Regulation of repair pathways is critical in promoting necessary cell death. BRCA genes are tumor suppressor genes mediate several cellular process including DNA replication, transcription regulation, cell cycle checkpoints, apoptosis, chromatin structuring and homologous recombination (HR). Homologous recombination deficiency (HRD), along with PPAR inhibition, is a vulnerability that enhances the cell death pathway when the single mutations alone would permit viability. Ovarian cancer commonly possesses defects in DNA repair pathways such as HRD due to BRCA mutations or otherwise.

There are three main types of ovarian cancer: epithelial (90%), germ cell (5%) and sex cord stromal cell (5%). Epithelial ovarian, being the most common, fifth leading cause of cancer-related deaths in women in the United States. Advanced ovarian cancer particularly poses challenges due to reduced therapeutic response rates from standard platinum-based chemotherapy and overall survival rates. Rucaparib has shown to induce cytotoxicity in tumor cell lines with deficiencies in BRCA1/2 and other DNA repair genes Label. Of all the BRCA1/2 mutations in ovarian cancer, most are due to germline mutations (18%), and approximately 7% represent somatic mutations acquired within the tumor 4.

The indication of rucaparib as an oral monotherapy in patients with deleterious BRCA mutation (germline and/or somatic) associated advanced ovarian cancer was granted accelerated approval in 2016 for selected patients who have previously received greater than two lines of platinum-based therapy. It is currently marketed in the US under the brand name Rubraca that contains rucaparib camsylate as the active ingredient. The identification of patients who are eligible for rucaparib therapy is performed via in vitro diagnostic tests to detect the presence of a deleterious BRCA mutation (germline and/or somatic). The FDA-approved test qualitatively detects sequence alterations in BRCA1 and BRCA2 (BRCA1/2) genes. More information can be found on the FDA Website 9.

While rucaparib is indicated for deleterious BRCA mutation (germline and/or somatic)-associated advanced ovarian cancer, there is evidence that its antitumor activity is also clinically effective against ovarian tumors with high homologous recombination deficiency (HRD) loss of heterozygosity (LOH) 4.

Accession Number
DBSALT001983
Structure
Thumb
Synonyms
Not Available
External IDs
AG 014699 / AG-014699 / AG-14699 / AG014699 / PF-01367338 / PF01367338
UNII
H3M9955244
CAS Number
459868-92-9
Weight
Average: 421.365
Monoisotopic: 421.120285949
Chemical Formula
C19H21FN3O5P
InChI Key
FCCGJTKEKXUBFZ-UHFFFAOYSA-N
InChI
InChI=1S/C19H18FN3O.H3O4P/c1-21-10-11-2-4-12(5-3-11)18-14-6-7-22-19(24)15-8-13(20)9-16(23-18)17(14)15;1-5(2,3)4/h2-5,8-9,21,23H,6-7,10H2,1H3,(H,22,24);(H3,1,2,3,4)
IUPAC Name
6-fluoro-2-{4-[(methylamino)methyl]phenyl}-3,10-diazatricyclo[6.4.1.0^{4,13}]trideca-1,4(13),5,7-tetraen-9-one; phosphoric acid
SMILES
OP(O)(O)=O.CNCC1=CC=C(C=C1)C1=C2CCNC(=O)C3=CC(F)=CC(N1)=C23
External Links
ChemSpider
8107583
ChEMBL
CHEMBL2105733
Predicted Properties
PropertyValueSource
Water Solubility0.0114 mg/mLALOGPS
logP2.39ALOGPS
logP2.45ChemAxon
logS-4.4ALOGPS
pKa (Strongest Acidic)13.16ChemAxon
pKa (Strongest Basic)9.32ChemAxon
Physiological Charge1ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count3ChemAxon
Polar Surface Area56.92 Å2ChemAxon
Rotatable Bond Count3ChemAxon
Refractivity92.91 m3·mol-1ChemAxon
Polarizability35.14 Å3ChemAxon
Number of Rings4ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon