[Prognostic Value of Recurrent Molecular Genetics and Epigenetics Abnormity in T Lymphoblastic Lymphoma / Leukemia -Review].

T lymphoblastic lymphoma / leukemia is a strong invasive and has a high incidence of various molecular genetic abnormalities. The NOTCH1 / FBXW7 mutation is one of the most common mutations, and related with good prognosis in T-LBL / ALL. PTEN mutation, a poor prognostic factor, could be overcome by NOTCH1 mutations in pediatric patients to some extent. Patients with MLL gene abnormality and loss of heterozygosity 6q have worse prognosis than those with normal karyotype. The incidence of MLL gene abnormality, RUNX1 mutation and DNMT3A mutation in early precursor T-lymphoblastic leukemia was higher than that of other mature subtypes, which could be used as risk stratification factors. Epigenetic abnormalities play an important role in the malignant transformation of stem cells. Epigenetics treatment such as demethylation therapy may improve the prognosis of high-risk patients. In this article, the NOTCH1,FBXW7,PTEN and RAS gene mutations and prognosis, the molecular and cellular abnormalities and prognosis, as well as epigenetic abnormality and prognosis are reviewed.