TGFB1 and Huntington disease: In the analysis of the relationship between plasma levels of TGF-β1 and elements of neuropsychological assessment, increased levels of TGF-β1 in the early stage of HD positively correlated with the results of MMSE (p = 0.03, R = 0.52) and CDT (p = 0.01, R = 0.56).