1210661 MBC metastatic breast cancer 3658 3047551 MpBC Metaplastic breast cancer 48 2651874 MetBC Metaplastic breast cancer 3 3010479 MeBC metaplastic breast cancer 2 3065954 MtBC metaplastic breast cancer 2 264236 MC Metaplastic breast cancer 1 1934769 MetaBC Metaplastic breast cancer 1