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Hemoglobin
international journal for hemoglobin research
Volume 40, 2016 - Issue 1
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Original Article

Analysis of Fetal Blood: Is There Still a Role for Prenatal Diagnosis of Thalassemia?

, &
Pages 29-31 | Received 30 Jul 2015, Accepted 24 Aug 2015, Published online: 18 Nov 2015
 

Abstract

The aim of the present study was to report the use of analysis of fetal blood in prenatal diagnosis (PND) of β- and α-thalassemia (β- and α-thal), at a Chinese tertiary, maternity center. All cases undergoing invasive testing for PND of thalassemias from 1 January 2010 to 31 December 2014 were included. The main clinical characteristics of these invasive procedures were retrieved from the database software used for analysis. One thousand, nine hundred and six invasive PNDs were carried out for thalassemia, including 904 cases for β-thal and 1002 for α-thal. In the 904 PNDs for β-thal, chorionic villus sampling (CVS) was done in 321 cases and amniocentesis in 583 cases. No fetal blood analysis was used for cases at-risk for β-thal. In the 1002 PNDs for α-thal, CVS was done in 724 cases, amniocentesis in 137 cases and fetal blood analysis in 141 cases. All the 278 cases sampled by amniocentesis or fetal blood analysis were found to be affected by Hb Bart’s (γ4) disease. Currently, fetal blood analysis is considered only in relatively late gestation when Hb Bart’s disease has already been identified by ultrasound in a fetus at-risk for α-thal.

Declaration of interest

This study was supported by a grant from the National Natural Science Foundation (81571448), People’s Republic of China. The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.

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