Characterization of a 3;6 translocation associated with renal cell carcinoma.
The most frequent cause of familial clear cell renal cell carcinoma (RCC) is von Hippel-Lindau disease and the VHL tumor suppressor gene (TSG) is inactivated in most sporadic clear cell RCC. Although there is relatively little information on the mechanisms of tumorigenesis of clear cell RCC without VHL inactivation, a subset of familial cases harbors a balanced constitutional chromosome 3 translocation. To date nine different chromosome 3 translocations have been associated with familial or multicentric clear cell RCC; and in three cases chromosome 6 was also involved. To identify candidate genes for renal tumorigenesis we characterized a constitutional translocation, t(3;6)(q22;q16.1) associated with multicentric RCC without evidence of VHL target gene dysregulation. Analysis of breakpoint sequences revealed a 1.3-kb deletion on chromosome 6 within the intron of a 2 exon predicted gene (NT_007299.434). However, RT-PCR analysis failed to detect the expression of this gene in lymphoblast, fibroblast, or kidney tumor cell lines. No known genes were disrupted by the translocation breakpoints but several candidate TSGs (e.g., EPHB1, EPHA7, PPP2R3A RNF184, and STAG1) map within close proximity to the breakpoints.
Foster
Rebecca E
RE
Department of Medical and Molecular Genetics, University of Birmingham, The Medical School, Birmingham B15 2TT, UK.
Abdulrahman
Mahera
M
Morris
Mark R
MR
Prigmore
Elena
E
Gribble
Susan
S
Ng
Beeling
B
Gentle
Dean
D
Ready
Steven
S
Weston
Phil M T
PM
Wiesener
Michael S
MS
Kishida
Takeshi
T
Yao
Masahiro
M
Davison
Val
V
Barbero
Jose Luis
JL
Chu
Carol
C
Carter
Nigel P
NP
Latif
Farida
F
Maher
Eamonn R
ER
D002292:Carcinoma, Renal Cell / Q000235:genetics*; D002461:Cell Line, Transformed; D002893:Chromosomes, Human, Pair 3 / Q000235:genetics*; D002896:Chromosomes, Human, Pair 6 / Q000235:genetics*; D006801:Humans; D008297:Male; D008875:Middle Aged; D008969:Molecular Sequence Data; D014178:Translocation, Genetic