Cancer metastasis gene database Home
Cancer metastasis database
General information | Literature | Expression | Regulation | Mutation | Homolog | Interaction

Basic Information

Gene ID

3626

Name

INHBC

Synonymous

inhibin, beta C;INHBC;inhibin, beta C

Definition

activin beta-C chain|inhibin beta C chain

Position

12q13.1

Gene type

protein-coding

Title

Abstract

non-small cell lung cancer

PURPOSE: Brain metastasis (BM) from non-small cell lung cancer (NSCLC) is relatively common, but identifying which patients will develop brain metastasis has been problematic. We hypothesized that genotype variants in the TGF-beta signaling pathway could be a predictive biomarker of brain metastasis. PATIENTS AND METHODS: We genotyped 33 SNPs from 13 genes in the TGF-beta signaling pathway and evaluated their associations with brain metastasis risk by using DNA from blood samples from 161 patients with NSCLC. Kaplan-Meier analysis was used to assess brain metastasis risk; Cox hazard analyses were used to evaluate the effects of various patient and disease characteristics on the risk of brain metastasis. RESULTS: The median age of the 116 men and 45 women in the study was 58 years; 62 (39%) had stage IIIB or IV disease. Within 24 months after initial diagnosis of lung cancer, brain metastasis was found in 60 patients (37%). Of these 60 patients, 16 had presented with BM at diagnosis. Multivariate analysis showed the GG genotype of SMAD6: rs12913975 and TT genotype of INHBC: rs4760259 to be associated with a significantly higher risk of brain metastasis at 24 months follow-up (hazard ratio [HR] 2.540, 95% confidence interval [CI] 1.204-5.359, P = 0.014; and HR 1.885, 95%