Correlation of LAPTM4B polymorphisms with hepatocellular carcinoma in Chinese patients.
Hepatocellular carcinoma (HCC) is the leading cause of cancer mortality in many countries. Evaluation of new susceptibility risk factors is therefore warranted in order to explore means to improve the survival rate. Here, we report on a novel HCC-related gene known as lysosomal protein transmembrane 4 beta (LAPTM4B) that has two alleles designated LAPTM4B*1 and LAPTM4B*2. Allele *1 differs from allele *2 in that it contains one copy of a 19-bp sequence, whereas this sequence is duplicated in allele *2 in exon 1 of LAPTM4B. In this study, we aimed to investigate the relationship between LAPTM4B allelic variation and HCC susceptibility. The LAPTM4B genotype was analyzed in the blood samples from 102 HCC patients and 135 healthy individuals by PCR. The genotypic distribution of LAPTM4B was analyzed using the chi-squared test. The frequencies of allele *2 were 38.24 and 24.07% in the HCC group and control group, respectively, representing a significant difference between these two groups (P<0.001). Thus, allele *2 of LAPTM4B appears to be associated with genetic susceptibility of HCC and may therefore be considered as a risk factor.
Department of Interventional Radiology and Vascular Surgery, Peking University Third Hospital, Beijing, 100191, China.
Guojun
G
Zhai
Hua
H
Yang
Xiaoxu
X
Ji
Fuxia
F
Xiong
Jing
J
Su
Michael A
MA
McNutt
Xuan
X
Li
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D000595:Amino Acid Sequence; D044466:Asian People / Q000235:genetics*; D001483:Base Sequence; D006528:Carcinoma, Hepatocellular / Q000209:etiology / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D008113:Liver Neoplasms / Q000209:etiology / Q000235:genetics*; D008297:Male; D008565:Membrane Proteins / Q000235:genetics*; D008875:Middle Aged; D008969:Molecular Sequence Data; D015513:Oncogene Proteins / Q000235:genetics*; D011110:Polymorphism, Genetic
C477083:LAPTM4B protein, human; D008565:Membrane Proteins; D015513:Oncogene Proteins