{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,2]],"date-time":"2026-07-02T21:52:54Z","timestamp":1783029174193,"version":"3.54.6"},"reference-count":37,"publisher":"Wiley","issue":"11","license":[{"start":{"date-parts":[[2021,9,27]],"date-time":"2021-09-27T00:00:00Z","timestamp":1632700800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Clinical Laboratory Analysis"],"published-print":{"date-parts":[[2021,11]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Corpus callosum abnormality (CCA) can lead to epilepsy, moderate severe neurologic or mental retardation. The prognosis of CCA is closely related to genetic etiology. However, copy number variations (CNVs) associated with fetal CCA are still limited and need to be further identified. Only a few scattered cases have been reported to diagnose CCA by whole exome sequencing (WES).<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Karyotyping analysis, copy number variation sequencing (CNV\u2010seq), chromosomal microarray analysis (CMA) and WES were parallelly performed for prenatal diagnosis of 19 CCA cases.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The total detection rate of karyotyping analysis, CMA (or CNV\u2010seq) and WES were 15.79% (3\/19), 21.05% (4\/19) and 40.00% (2\/5), respectively. Two cases (case 11 and case 15) were diagnosed as aneuploidy (47, XY, + 13 and 47, XX, + 21) by karyotyping analysis and CNV\u2010seq. Karyotyping analysis revealed an unknown origin fragment (46,XY,add(13)(p11.2)) in case 3, which was further confirmed to originate from p13.3p11.2 of chromosome 17 by CNV\u2010seq. CMA revealed arr1q43q44 (238923617\u2013246964774)\u00a0\u00d7\u00a01(8.04\u00a0Mb) in case 8 with a negative result of chromosome karyotype. WES revealed that 2 of 5 cases with negative results of karyotyping and CNV\u2010seq or CMA carried pathogenic genes ALDH7A1 and ARID1B.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Parallel genetic tests showed that CNV\u2010seq and CMA are able to identify additional, clinically significant cytogenetic information of CCA compared to karyotyping; WES significantly improves the detection rate of genetic etiology of CCA. For the patients with a negative results of CNV\u2010seq or CMA, further WES test is recommended.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jcla.23971","type":"journal-article","created":{"date-parts":[[2021,9,28]],"date-time":"2021-09-28T00:15:57Z","timestamp":1632788157000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":14,"title":["Prenatal genetic testing in 19 fetuses with corpus callosum abnormality"],"prefix":"10.1002","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0216-8950","authenticated-orcid":false,"given":"Qin","family":"She","sequence":"first","affiliation":[{"name":"Prenatal Diagnostic Center The Six Affiliated Hospital Guangzhou Medical University or Qingyuan People\u2019s Hospital Qingyuan China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Erfang","family":"Tang","sequence":"additional","affiliation":[{"name":"Prenatal Diagnostic Center The Six Affiliated Hospital Guangzhou 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