TY - JOUR
T1 - The many etiologies of nonimmune hydrops fetalis diagnosed by exome sequencing
AU - Wagner, Tova
AU - Fahham, Duha
AU - Frumkin, Ayala
AU - Shaag, Avraham
AU - Yagel, Simcha
AU - Yanai, Nili
AU - Porat, Shay
AU - Mor-Shaked, Hagar
AU - Meiner, Vardiella
AU - Daum, Hagit
N1 - Publisher Copyright:
© 2021 John Wiley & Sons Ltd.
PY - 2022/6
Y1 - 2022/6
N2 - Objective: To explain the importance of identifying an etiology for the pathological finding of nonimmune hydrops fetalis (NIHF) and to explore the impact of exome sequencing in recurrent NIHF. In addition, we present two cases of pregnancies affected with recurrent NIHF, in which genetic investigation was advantageous. Methods: Our study aimed to investigate the genetic background, if available, of all fetuses with NIHF referred to our tertiary medical center from January 2013 to August 2020. We summarized the etiology of NIHF if known, sonographic findings, genetic investigation and the pregnancies' outcomes. Results: We encountered 144 families with NIHF. Genetic investigation was performed by chromosomal microarray analysis (CMA) in 63 (63/144. 44%) fetuses. Seventeen of 63 (27%) had a positive CMA result. In the negative CMA group, 15 (15/46, 33%) opted for exome sequencing, of which seven exomes were positive (47%). Among these, there were four couples with recurrent pregnancies affected by hydrops. Among the remaining 11 exome investigations for non-recurrent hydrops, another three were diagnostic. Conclusion: As identifying the etiology of the NIHF is an invaluable tool for the prognosis of the pregnancy, exome sequencing can provide further elucidation of the underlying pathogenesis of NIHF. Thus, genetic investigation should be recommended for cases of NIHF.
AB - Objective: To explain the importance of identifying an etiology for the pathological finding of nonimmune hydrops fetalis (NIHF) and to explore the impact of exome sequencing in recurrent NIHF. In addition, we present two cases of pregnancies affected with recurrent NIHF, in which genetic investigation was advantageous. Methods: Our study aimed to investigate the genetic background, if available, of all fetuses with NIHF referred to our tertiary medical center from January 2013 to August 2020. We summarized the etiology of NIHF if known, sonographic findings, genetic investigation and the pregnancies' outcomes. Results: We encountered 144 families with NIHF. Genetic investigation was performed by chromosomal microarray analysis (CMA) in 63 (63/144. 44%) fetuses. Seventeen of 63 (27%) had a positive CMA result. In the negative CMA group, 15 (15/46, 33%) opted for exome sequencing, of which seven exomes were positive (47%). Among these, there were four couples with recurrent pregnancies affected by hydrops. Among the remaining 11 exome investigations for non-recurrent hydrops, another three were diagnostic. Conclusion: As identifying the etiology of the NIHF is an invaluable tool for the prognosis of the pregnancy, exome sequencing can provide further elucidation of the underlying pathogenesis of NIHF. Thus, genetic investigation should be recommended for cases of NIHF.
UR - http://www.scopus.com/inward/record.url?scp=85109370973&partnerID=8YFLogxK
U2 - 10.1002/pd.5977
DO - 10.1002/pd.5977
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C2 - 34132406
AN - SCOPUS:85109370973
SN - 0197-3851
VL - 42
SP - 881
EP - 889
JO - Prenatal Diagnosis
JF - Prenatal Diagnosis
IS - 7
ER -