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Objective

To investigate the clinical characteristics and prognosis of acute myeloid leukemia(AML) patients with ASXL1 mutation.

Methods

The clinical data of 229 newly diagnosed AML patients treated in our hospital from April 2016 to October 2019 were analyzed retrospectively. The next-generation sequencing technology was used to detect gene mutations in all the patients, the clinical characteristics of the patients with ASXL1 mutation were analyzed.

Results

ASXL1 gene mutation was detected out in 45 patients(19.6%). Among these patients, the frameshift mutation (n=22,48.9%) was most common, followed by missense mutation (n=15, 33.3%) and nonsense mutation (n=8,17.8%), respectively, all of them were located at exon 12. The median mutation rate was 32.47%(range, 2.74%-53.50%). The median age of the patients with ASXL1 mutation was 54(range, 14-74) years old, and most of the patients were male, and most of them with the history of MDS or MPN, and low white blood cell count at the initial diagnosed (P<0.05). Patients with ASXL1 mutation showed a lower CR rate than that of without ASXL1 mutation. Patients with or without ASXL1 mutation showed a statistically significant difference in survival at 20 months (P=0.042), while there was no significant difference between the patients in the two groups over 20 months (P=0.505). All the 6 patients with ASXL1 mutation in low-risk group were survived, while the median OS time was 16 months in the high-risk group(P=0.034). Multivariate analysis showed that the history of MDS or MPN and CR rate from induction therapy were the independent risk factors affecting survival of the patients.

Conclusion

Frameshift mutation is commonly in AML patients with ASXL1 gene mutation, and ASXL1 mutation were more often in men, the history of MDS or MPN, and low white blood cell count. The CR rate of the patients with ASXL1 mutation was lower than that of the AML patients without ASXL1 mutations, AML patients with ASXL1 mutation showed poor short-term efficacy, but there was no significant difference between the two groups in long-term survival over 20 months."xsd:string
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http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Liu C."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Liu L."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Li G.H."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Wang W.Q."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Guo H.P."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Qin W.W."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/author"Zhou N.C."xsd:string
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http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/name"Zhongguo Shi Yan Xue Ye Xue Za Zhi"xsd:string
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http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/title"[Clinical Characteristics and Prognosis of Acute Myeloid Leukemia Patients with ASXL1 Gene Mutation]."xsd:string
http://purl.uniprot.org/citations/34893103http://purl.uniprot.org/core/volume"29"xsd:string
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