Abstract:
BACKGROUND:Heritable factors are well known to increase the risk of cancer in families. Known susceptibility genes account for a small proportion of all colorectal cancer cases. The aim of this study was to identify the genetic background in a family suggested to segregate a dominant cancer syndrome with a high risk of rectal- and gastric cancer. We performed whole exome sequencing in three family members, 2 with rectal cancer and 1 with gastric cancer and followed it up in additional family members, other patients and controls. RESULTS:We identified 12 novel non-synonymous single nucleotide variants, which were shared among 5 affected members of this family. The mutations were found in 12 different genes; DZIP1L, PCOLCE2, IGSF10, SUCNR1, OR13C8, EPB41L4B, SEC16A, NOTCH1, TAS2R7, SF3A1, GAL3ST1, and TRIOBP. None of the mutations was suggested as a high penetrant mutation. It was not possible to completely rule out any of the mutations as contributing to disease, although seven were more unlikely than the others. Neither did we rule out the effect of all thousands of intronic, intergenic and synonymous variants shared between the three persons used for exome sequencing. CONCLUSIONS:We propose this family, suggested to segregate dominant disease, could be an example of complex inheritance.
journal_name
BMC Genetjournal_title
BMC geneticsauthors
Thutkawkorapin J,Picelli S,Kontham V,Liu T,Nilsson D,Lindblom Adoi
10.1186/s12863-016-0351-zsubject
Has Abstractpub_date
2016-02-13 00:00:00pages
41issn
1471-2156pii
10.1186/s12863-016-0351-zjournal_volume
17pub_type
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