Journals / Uluslararası Hematoloji-Onkoloji Dergisi / 2010 / Cilt: 20 - Sayı: 4

Türk hasta popülasyonunda BRCA1 ve BRCA2 germline mutasyonlarının high resolution melting analizi ile taranması

High-resolution melting analysis for screening of Turkish germline mutations in BRCA1 and BRCA2

Pages
235–240
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

Our preliminary results indicate that penetrance of 5382insC mutation in BRCA1 mutations is dominant in Turkish population; however, it seems there might be some other genes that contribute more significantly to familial breast carcinoma in Turkish population in BRCA.

📌 3 Key Takeaways

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Objective & Hypothesis:The germline mutations of breast cancer susceptibility genes 1 (BRCA1) and 2 (BRCA2) are the two most frequently mutated genes in inherited breast and ovarian cancer.
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Key Findings & Data:Among the most known mutations in these tumor suppressor genes are 5382insC and 185delAG in BRCA1 and 6174delT in BRCA2.
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Conclusion & Impact:Our preliminary results indicate that penetrance of 5382insC mutation in BRCA1 mutations is dominant in Turkish population; however, it seems there might be some other genes that contribute more significantly to familial breast carcinoma in Turkish population in BRCA.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The germline mutations of breast cancer susceptibility genes 1 (BRCA1) and 2 (BRCA2) are the two most frequently mutated genes in inherited breast and ovarian cancer. Among the most known mutations in these tumor suppressor genes are 5382insC and 185delAG in BRCA1 and 6174delT in BRCA2. The aim of the current study was to investigate the frequency of these BRCA1 and BRCA2 mutations in Western Turkish population. Twenty-five women with a history of self breast cancer and family history, 25 women with a familial history of breast cancer in their first degree-relatives and five healthy women formed the studied groups. DNA from peripheral blood was extracted and analyzed by high-resolution melting (HRM) analysis. None of the 50 patients and five healthy individuals was found to carry 185delAG mutation in BRCA1 and the 6174delT mutation in BRCA2. But, we found the 5382insC mutation in exon 20 of BRCA1 in five patients, having a strong family history. Four of these five patients were from the same family. Our preliminary results indicate that penetrance of 5382insC mutation in BRCA1 mutations is dominant in Turkish population; however, it seems there might be some other genes that contribute more significantly to familial breast carcinoma in Turkish population in BRCA.

Özet

Kalıtsal meme ve over kanseri gelişiminde germline mutasyonu en sık rastlanan genler breast cancer susceptibility genes 1 (BRCA1) ve 2 (BRCA2)’dir. Bu tümör baskılayıcı genlerde en sık rastlanan mutasyonlar ise BRCA1 için 5382insC ve185delAG iken BRCA 2’de 6174delT’dir. Çalışmanın amacı Türkiye’nin batısındaki popülasyonda bu mutasyonların sıklığını kuvvetli aile öyküsü olanlarda saptamaktır. Çalışmaya kendisinde ve birinci derece yakınlarında meme ya da over kanseri öyküsü olan 25 kadın ile kendisinde kanser öyküsü olmadığı halde birinci derece yakınlarında meme ya da over kanseri öyküsü olan 25 kadın dahil edildi. Beş adet sağlıklı kontrol de çalışmaya alındı. Periferik kan örneklerinden izole edilen DNA’lar high-resolution melting (HRM) analizi ile çalışıldı. BRCA1’deki 185delAG ve BRCA2’deki 6174delT mutasyonu ne çalışma ne de kontrol grubunda saptanmadı. Ancak, BRCA1’deki 5382insC mutasyonu dördü aynı aileden olan toplam beş kişide saptandı. Çalışmamızın öncü sonuçları 5382insC mutasyonunun Türk hasta popülasyonunu için daha dominant bir penetrans gösterdiğini saptamakla birlikte, BRCA geninde Türklere özgü yeni dominant mutasyonlarının da belirlenmesi gerekliliğini ortaya koymuştur.

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Cite This Article

PURCU, D. U., KARACA, Ş. B., KAPKAÇ, M., ÖZDEMİR, N., UZUNOĞLU, S., USLU, R. (2010). Türk hasta popülasyonunda BRCA1 ve BRCA2 germline mutasyonlarının high resolution melting analizi ile taranması. Uluslararası Hematoloji-Onkoloji Dergisi, Cilt: 20 - Sayı: 4, 235–240. https://ajindex.com/articles/322979

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