Under-ascertainment of breast cancer susceptibility gene carriers in a cohort of New Zealand female breast cancer patients.

On average, Māori were found to be slightly younger at diagnosis compared to non-Māori (57.6 vs 63.1 years), and a higher proportion were diagnosed with grade 3 tumours compared to non-Māori (60.9% vs 47.8%) (Supplementary Table 4), but these clinical differences did not reach statistical significance ( P < 0.05).

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