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EPHB2 germline variants in patients with colorectal cancer or hyperplastic polyposis

Kokko, Antti; Laiho, Päivi; Lehtonen, Rainer; Korja, Sanna (Tay); Schleutker, Johanna (Tay) (2006)

 
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ephb2_germline_variants_2006.pdf (289.3Kt)
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Kokko, Antti
Laiho, Päivi
Lehtonen, Rainer
Korja, Sanna (Tay)
Schleutker, Johanna (Tay)
2006

BMC Cancer 6
145
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.
doi:10.1186/1471-2407-6-145
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Julkaisun pysyvä osoite on
https://urn.fi/urn:nbn:uta-3-628

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BioMed Central Open access
Tiivistelmä
Background

Ephrin receptor B2 (EPHB2) has recently been proposed as a novel tumor suppressor gene in colorectal cancer (CRC). Inactivation of the gene has been shown to correlate with progression of colorectal tumorigenesis, and somatic mutations have been reported in both colorectal and prostate tumors.

Methods

Here we have analyzed the EPHB2 gene for germline alterations in 101 individuals either with 1) CRC and a personal or family history of prostate cancer (PC), or 2) intestinal hyperplastic polyposis (HPP), a condition associated with malignant degeneration such as serrated adenoma and CRC.

Results

Four previously unknown missense alterations were observed, which may be associated with the disease phenotype. Two of the changes, I361V and R568W, were identified in Finnish CRC patients, but not in over 300 Finnish familial CRC or PC patients or more than 200 population-matched healthy controls. The third change, D861N, was observed in a UK HPP patient, but not in additional 40 UK HPP patients or in 200 UK healthy controls. The fourth change R80H, originally identified in a Finnish CRC patient, was also found in 1/106 familial CRC patients and in 9/281 healthy controls and is likely to be a neutral polymorphism.

Conclusion

We detected novel germline EPHB2 alterations in patients with colorectal tumors. The results suggest a limited role for these EPHB2 variants in colon tumor predisposition. Further studies including functional analyses are needed to confirm this.
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Kalevantie 5
PL 617
33014 Tampereen yliopisto
oa[@]tuni.fi | Yhteydenotto | Tietosuoja | Saavutettavuusseloste