THE PATTERN OF STK11 GENE MUTATIONS AND ITS PHENOTYPICAL MANIFESTATION IN PATIENTS WITH HAMARTOMAS POLYPOSIS

M. R. Lozynska, A. Plawski, I. V. Khavunka, N. M. Fomenko, L. Y. Lozynska


DOI: http://dx.doi.org/10.30970/sbi.0801.327

Abstract


The clinical examination, genealogical and molecular genetic analysis of the probands and the risk group of three families with Peutz–Jeghers syndrome were carried out. The mutations of STK11 gene in exons 1, 2, 3 and 4, that lead to the formation of truncated protein and loss of its kinase activity, were confirmed in probands and in two persons of the risk group. The medium age of the disease manifestation of the colon symptoms was 25 (16–34) years. The typical features of the disease were the conglo­merate of hamartomas and intestinal invaginations. Polyps were found in different part of the digestive tract: in stomach, small intestine, gall bladder and large bowel. The disturbances of reproduction functions and congenital abnormalities were observed in probands with hamartomas syndrome. Two relatives of the probands with Peutz–Jeghers syndrome had cancer of small intestine and large bowel in young age. The melanin pigmentation was a significant extraintestinal marker of this syndrome. The patients with Peutz-Jeghers syndrome need regular endoscopic investigation with obligatory observation of small intestine, the ultrasonic examination of internals organs, mammography, the detections of STK11 gene mutations for early identification of the oncological diseases and genetic consultation for detection of the risk group.


Keywords


genealogical analysis, Peutz–Jeghers syndrome, mutations of STK11 gene, colon cancer

References


1. Ривкин В.Л., Кирьянов И.В., Никитин А.М., Лукин В.В. Полипы и полипоз толстой кишки. М.: МЕДПРАКТИКА-М, 2005. 151 с.

2. Amos C.J., Frazier ML. , Wei C., McGarrity TJ. Peutz-Jeghers syndrome [Електрон. ресурс]// Режим доступу http://www.ncbi.nlm.nih.gov/books/NBK1266/ (дата звернення 10.04.2013). – Назва з екрана. (22.02 2011).

3. Borun P., Bartkowiak A., Banasiewicz T. et al. High resolution Melting analysis as a rapid and efficient method of screening and small mutations in the STK11 gene in patients with Peutz-Jeghers syndrome. BMC Medical Genetics, 2013; 14(58): 2-7.
https://doi.org/10.1186/1471-2350-14-58
PMid:23718779 PMCid:PMC3681719

4. Cotton R.G.H., Horaitis O. Human Genome Variation Society. Nature Encyclopedia of the Human Genome 2003 [cited 2005 Nov]; 3. National Center of Biotechnology Information.

5. Delaini G.G, Skřička T., Colucci G. Intestinal polyps and polyposis. From genetics to treatment and follow up. Italia: Springer-Verlag, 2009; 243.
https://doi.org/10.1007/978-88-470-1124-3
PMCid:PMC2746993

6. Hearle N., Schumacher V., Menko H.F. et al. Frequancy and spectrum of cancers in the Peutz-Jeghers syndrome. Clin. Cancer Res, 2006; 12(10): 3209-3215.
https://doi.org/10.1158/1078-0432.CCR-06-0083
PMid:16707622

7. van Lier M.G.F., Vagner A., Mathus-Vliegen E.M.H. et al. High cancer risk in Peutz-Jeghers syndrome: a systematic review and surveillance recommendations. Am. J. Gastroenterol, 2010; 105(6): 1258-1264.
https://doi.org/10.1038/ajg.2009.725
PMid:20051941

8. Lim W., Olschwang S., Keller J.J. et al. Relative frequency and morphology of cancers in STK11 mutations carries. Gastroenterol, 2004; 126(7): 1788-1794.
https://doi.org/10.1053/j.gastro.2004.03.014
PMid:15188174

9. Mehenni H. Sebbagh M, Olschwang S. et al. The LKB1 complex AMPK-pathway: the tree that hides the forest. Fam. Cancer, 2011; 10(3): 415-424.
https://doi.org/10.1007/s10689-011-9457-7
PMid:21656073 PMCid:PMC3530433

10. Mehenni H, Resta N, Guanti G. et al. Molecular and clinic characteristics in 46 familial affected with Peutz-Jeghers syndrome. Dic. Dis. Sci, 2007; 52(8): 1924-1933.
https://doi.org/10.1007/s10620-006-9435-3
PMid:17404884

11. Miyoshi H. et al. Gastrointestinal hamartomatous polyposis in Lkb1heterozygous knockout mice. Cancer Res, 2002; 62(8): 2261-2266.

12. Schumacher V., Vogel T., Leube B. et al. STK11 genotyping and cancer risk in Peutz-Jeghers syndrome. J. Med. Genet, 2005; 42: 428-435.
https://doi.org/10.1136/jmg.2004.026294
PMid:15863673 PMCid:PMC1736065

13. Stojcev Z., Borun P., Hermann J. et al. Hamartomatous polyposis syndromes. Hereditary Сancer in Сlinical Рractice, 2013; 11: 4.
https://doi.org/10.1186/1897-4287-11-4
PMid:23724922 PMCid:PMC3680194

14. Vaahtomeri K, Mäkelä T. Molecular mechanisms of tumor suppression by LKB1. FEBS Lett, 2011; 585(7): 944-951.
https://doi.org/10.1016/j.febslet.2010.12.034
PMid:21192934


Refbacks

  • There are currently no refbacks.


Copyright (c) 2014 Studia biologica

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.