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Tumor suppressor gene plays an important role in maintaining the homeostasis between cell loss and growth. Fragile in maintaining the homeostasis between cell loss and growth. Fragile histidine triad (FHIT) gene found recently was studied in a deep going way; it becomes the focus as a result of its roleof ep going way; it becomes the focus as a result of its roleof anti-tumor in human various type of tissue. Due to the high efficiency of FHIT gene benefiting the anti-tumor, it is proposed gh efficiency of FHIT gene benefiting the anti-tumor, it is proposed as a candidate of tumor suppressor gene though there are several opposite opinions.several opposite opinions.rnWe stress the summary of some properties of FHIT gene on proapoptosis according to the published data which showed gene on proapoptosis according to the published data which showed rnthe stronger proapoptotic function of FHIT gene; the apoptosis induced by FHIT depends on the expression level and status of ene; the apoptosis induced by FHIT depends on the expression level and status of FHIT; and FHIT gene can altate the cell cycling properties and reduce the tumorigenic potential; the apoptotic process e can altate the cell cycling properties and reduce the tumorigenic potential; the apoptotic process rninduced by FHIT has no relation to p53 gene. In a ward, in consideration of its multiple functions against malignancies, FHIT in consideration of its multiple functions against malignancies, FHIT gene deserves attention and exploration as a selective target for searching the mechanism of tumorigenesis and clinical et for searching the mechanism of tumorigenesis and clinical therapeutic applications in further.le histidine triad (FHIT) gene; Apoptosis; Tumorigenesis; Tumor suppressor gene deserves attention and exploration as a selective target for searching the mechanism of tumorigenesis and clinical therapeutic applications in further.rn