Mutational Analysis of the Candidate Tumor Suppressor Gene ING1 in Indian Oral Squamous Cell Carcinoma

ING1, a recently identified candidate tumor suppressor gene, involved in the p53 signaling pathway is mapped at chromosome 13q34. Since loss of heterozygosity at 13q34 has been reported in squamous cell carcinoma of head and neck, we screened for mutations in ING1 by polymerase chain reaction-single strand conformation polymorphism in 71 oral squamous cell carcinomas (OSCC) from India, 15 of which were known to harbor p53 mutations. A single polymorphism (G to A) was detected in 14 (19.7%) of the tumors analyzed. No mutation was observed in any of the 71 OSCCs analyzed. These results suggest that ING1 is not a target for mutational inactivation in OSCC of Indians.