MTHFR and autoimmune lymphoproliferative syndrome: To further research the miR-22-3p and miR-149-5p induced biological meaning of the change in MTHFR expression in HCC cells, we added the expression of TP53INP1 and PDCD4 in HCC as two parameters under conditions of long term FA deficiency, and the results indicated that FA deficiency induced the expression of TP53INP1 (34%) and PDCD4 (49%) in elevated.