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- Title
Prevalence of RECQL germline variants in Pakistani early-onset and familial breast cancer patients.
- Authors
Rashid, Muhammad Usman; Muhammad, Noor; Khan, Faiz Ali; Shehzad, Umara; Naeemi, Humaira; Malkani, Naila; Hamann, Ute
- Abstract
Background: The RecQ Like Helicase (RECQL) gene has previously been shown to predispose to breast cancer mainly in European populations, in particular to estrogen receptor (ER) and/or progesterone receptor (PR) positive tumor. Here, we investigated the contribution of pathogenic RECQL germline variants to hereditary breast cancer in early-onset and familial breast cancer patients from Pakistan. Methods: Comprehensive RECQL variant analysis was performed in 302 BRCA1 and BRCA2 negative patients with ER and/or PR positive breast tumors using denaturing high-performance liquid chromatography followed by DNA sequencing. Novel variants were classified using Sherloc guidelines. Results: One novel pathogenic protein-truncating variant (p.W75*) was identified in a 37-year-old familial breast cancer patient. The pathogenic variant frequencies were 0.3% (1/302) in early-onset and familial breast cancer patients and 0.8% (1/133) in familial patients. Further, three novel variants of unknown significance, p.I141F, p.S182S, and p.C475C, were identified in familial breast cancer patients at the age of 47, 68, and 47 respectively. All variants were absent in 250 controls. Conclusions: Our data suggest that the RECQL gene plays a negligible role in breast cancer predisposition in Pakistan.
- Subjects
PAKISTAN; BREAST cancer; HEREDITARY cancer syndromes; CANCER patients; HIGH performance liquid chromatography; GERM cells; PROGESTERONE receptors
- Publication
Hereditary Cancer in Clinical Practice, 2020, Vol 18, Issue 1, p1
- ISSN
1731-2302
- Publication type
Article
- DOI
10.1186/s13053-020-00159-6