{'fraction_non_alphanumeric': 0.0216998191681736, 'fraction_numerical': 0.034358047016274866, 'mean_word_length': 4.711340206185567, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Role of population-based studies in assessing genetic cancer risk.

The article by Loman et al. (1) in this issue of the Journal reports rates of germline mutations of breast and ovarian cancer susceptibility genes BRCA1 and BRCA2 among Swedish women who were diagnosed with breast cancer at age 40 years or less. The study is population based and includes all breast cancer patients diagnosed in southern Sweden during the period from 1990 through 1995. The study’s principal conclusion is that 9% (21 of 234) of these young patients carried mutations.