Furthermore, increased ALDH activity has been found in stem cell populations in different tumor types including human multiple myeloma, acute myeloid leukemia, brain, breast, liver, colon, pancreas [6], [7] and, more recently, in lung, where ALDH1A1 expression is associated with poor survival in a cohort of stage I NSCLC patients [8]. Here, LDHA is linked to non-small cell lung carcinoma.