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Case Report Open Access

Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report

  • Authors:
    • Fagui Yue
    • Yuting Jiang
    • Yuan Pan
    • Leilei Li
    • Linlin Li
    • Ruizhi Liu
    • Ruixue Wang
  • View Affiliations / Copyright

    Affiliations: Center for Reproductive Medicine and Center for Prenatal Diagnosis, The First Hospital, Jilin University, Changchun, Jilin 130021, P.R. China
    Copyright: © Yue et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 1267-1275
    |
    Published online on: June 20, 2019
       https://doi.org/10.3892/etm.2019.7695
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Abstract

Trisomy 16q is a rare disorder with severe abnormalities, which always leads to early postnatal mortality. It usually results from a parental translocation, exhibiting 16q duplication associated with another chromosomal deletion. The present study reports on the clinical presentation and molecular cytogenetic results of a small‑for‑gestational‑age infant, consisting of partial trisomy 16q21→qter and monosomy 2p25.3→pter. The proband presented with moderately low birthweight, small anterior fontanelles, prominent forehead, low hairline, telecanthus, flat nasal bridge, choanal atresia, clinodactyly of the fifth fingers, urogenital anomalies, congenital muscular torticollis and congenital laryngomalacia. The last two traits have not previously been reported in any trisomy 16q and monosomy 2p cases. The proband was trisomic for the 16q21→qter chromosomal region with the karyotype 46,XY,der(2)t(2;16)(p25;q21)pat. The chromosomal anomaly was the result of unbalanced segregation of a paternal balanced translocation, 46,XY,t(2;16)(p25;q21). In this case, molecular cytogenetic analysis had a critical role in delineating the proband's clinical phenotype. Although this patient had a 16q21→qter duplication and a 2p25.3→pter deletion, the latter may have had mild phenotypic effects when associated with trisomy 16q. The literature was also reviewed, focusing on cases with the same breakpoints, localizations and clinical features reported in recent years.
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Copy and paste a formatted citation
Spandidos Publications style
Yue F, Jiang Y, Pan Y, Li L, Li L, Liu R and Wang R: Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report. Exp Ther Med 18: 1267-1275, 2019.
APA
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., & Wang, R. (2019). Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report. Experimental and Therapeutic Medicine, 18, 1267-1275. https://doi.org/10.3892/etm.2019.7695
MLA
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., Wang, R."Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report". Experimental and Therapeutic Medicine 18.2 (2019): 1267-1275.
Chicago
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., Wang, R."Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report". Experimental and Therapeutic Medicine 18, no. 2 (2019): 1267-1275. https://doi.org/10.3892/etm.2019.7695
Copy and paste a formatted citation
x
Spandidos Publications style
Yue F, Jiang Y, Pan Y, Li L, Li L, Liu R and Wang R: Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report. Exp Ther Med 18: 1267-1275, 2019.
APA
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., & Wang, R. (2019). Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report. Experimental and Therapeutic Medicine, 18, 1267-1275. https://doi.org/10.3892/etm.2019.7695
MLA
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., Wang, R."Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report". Experimental and Therapeutic Medicine 18.2 (2019): 1267-1275.
Chicago
Yue, F., Jiang, Y., Pan, Y., Li, L., Li, L., Liu, R., Wang, R."Molecular cytogenetic characterization of partial monosomy 2p and trisomy 16q in a newborn: A case report". Experimental and Therapeutic Medicine 18, no. 2 (2019): 1267-1275. https://doi.org/10.3892/etm.2019.7695
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