ERBB2 and breast cancer: Additionally, no statistically significant differences were evidenced in the frequency of the HER-2 allele between African Americans and Caucasians (P > 0.49) [30] In another study conducted on the Greek population, which included 45 women diagnosed with breast cancer (32 Christians and 13 Muslims) and 56 control cases (43 Christians and 13 Muslims), it was observed that the frequency of the G allele and genotypes containing G was notably higher among Muslims compared to Christians (p = 0.020 and p = 0.008, respectively).