NDUFB8 and cancer: a Expression levels of complex I subunit NDUFB8 in 197 human brain metastases from different cancers: Carcinoma not otherwise specified (NOS; n = 9), colon cancer (n = 9), breast cancer (n = 25), renal cell cancer (RCC; n = 9), non-small cell lung cancer (NSCLC; n = 52), small cell lung cancer (SCLC; n = 7), melanoma (n = 78) and others (n = 8).