Rabbit Anti-Human CD333 (a.a. 166-375) Polyclonal antibody

Erdafitinib is the first Food and Drug Administration (FDA)-approved oral pan-fibroblast growth factor receptor (FGFR) kinase inhibitor that binds to four FGFRs (FGFR-1 to -4), leading to decreased cell signaling and cellular apoptosis. Erdafitinib also binds to RET, colony-stimulating factor 1 receptor (CSF-1R), platelet-derived growth factor receptor a and beta (PDGFR-alpha and PDGFR-beta), Fms-related tyrosine kinase 4 (FLT4), KIT and vascular endothelial growth factor receptor 2 (VEGFR-2), exhibiting additional antitumor mechanisms resulting in cell kill. In this article, we provide a comprehensive review of the preclinical and clinical activity of erdafitinib, which has been recently approved in the U.S. for the treatment of adult patients with locally advanced or metastatic urothelial carcinoma with susceptible FGFR3/FGFR2 genetic alterations following progression during or after at least one line of platinum-containing chemotherapy and within 12 months of neoadjuvant or adjuvant platinum-containing chemotherapy. Erdafitinib is the first oral treatment option for patients with urothelial carcinoma.

The incidence of oropharyngeal squamous cell carcinoma (OPSCC) has been increasing due to high-risk HPV infection. We explored the significance of genetic alterations in HPV-positive (HPV-P) and HPV-negative (HPV-N) OPSCC patients on long-term outcome. A total of 157 cases of primary resected OPSCC diagnosed from 1978 to 2005 were subjected to a targeted exome sequencing by MSK-IMPACT (TM) interrogating somatic mutations in 410 cancer-related genes. Mutational profiles were correlated to recurrence and survival outcomes. OPSCC included 47% HPV-positive (HPV-P) and 53% HPV-negative (HPV-N) tumors arising in the base of tongue (BOT, 43%), palatine tonsil (30%) and soft palate (SP, 27%). HPV negative status, SP location and smoking were associated with poorer outcome. Poorer overall survival was found in NOTCH1-mutated HPV-P (p = 0.039), and in SOX2-amplified HPV-N cases (p = 0.036). Chromosomal arm gains in 8p and 8q, and 16q loss were more common in HPV-P (p = 0.005, 0.04 and 0.01, respectively), while 9p, 18q and 21q losses were more frequent in HPV-N OPSCC (p = 0.006, 0.002 and 0.01, respectively). Novel, potentially functional JAK3, MYC and EP300 intragenic deletions were found in HPV-P, and FOXP1, CDKN2A, CCND1 and RUNX1 intragenic deletions and one FGFR3 inversion were detected in HPV-N tumors. HPV-N/TP53-wild-type OPSCC harbored recurrent mutations in NOTCH1/3/4 (39%), PIK3CA, FAT1 and TERT. In comparison to their oral and laryngeal counterparts, HPV-N OPSCC were genetically distinct. In OPSCC, HPV status, tumor subsite and smoking determine outcome. Risk-stratification can be further refined based on the mutational signature, namely, NOTCH1 and SOX2 mutation status.