[Gene Diagnosis and Analysis of Clinical Hematological Phenotype of Thailand Deleted α-Thalassemia 1].
2016
OBJECTIVE: To investigate the hematologic characteristics and gene diagnosis of patients with Thailand deleted α-thalassemia 1, so as to provide the information for clinical genetic counseling. METHODS: The clinical data of 32 patients with Thailand delated α-thalassemia 1 were analyzed retrospectively; the hematologic characteristics and gene diagnosis of Thailand deleted type were investigated by using routine hematologic examination, genetic detection of common thalassemia and Thailand deleted α-thalassemia 1. RESULTS: Among 32 cases, the Thailand deleted α-thalassemia 1 heterozygote was found in 29 cases, the Thailand deleted α-thalassemia 1 and α(3.7) gene deletion double heterozygote were found in 1 case, the Thailand deleted α-thalassemia 1 with β-thalassemia (1 case with codons 41-42 mutation heterozygous, 1 case with CD17 mutation heterozygous) was found in 2 cases by detection. The MCV and MCH levels were decreased in all cases of Thailand deleted thalassemia 1, there were significant differences in RBC, MCV, MCH (P<0.05) between normal control and Thailand deletion α-thalassemia 1 group; there were also significant differences in MCHC (P<0.05) between Southeast asia thalassemia and Thailand deleted α-thalassemia 1 group. CONCLUSION: There are no significant differences in hematological parameters except MCHC between Southeast asia thalassemia and Thailand deleted α-thalassemia 1 group. moreover the Thailand deleted α-thalassemia 1 in a certain proportion exists in area with high incidence of thalassemia, therefor the clinicians should pay more attention to the screen and diagnosis of Thailand delated α-thalassemia and can exactly diagnose the Thailand delected α-thalassemia 1 on the basis of comprehensive analysis of conventional and Thailand delected α-thalassemia 1 detection results, clinical presentation, hematologic parameters and ultrasonic examination, so as to avoid the birth of child with severe and intermidiate type α-thalassemia caused by Thailand deleted α-thalassemia 1.
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