Increased nuchal translucency and split-hand/foot malformation in a fetus with an interstitial deletion of chromosome 2q that removes the SHFM5 locus

E. K. Bijlsma, A. C. Knegt, C. M. Bilardo, F. R. Goodman

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Objectives: To describe and discuss the clinical, cytogenetic and molecular findings in a fetus with the first prenatally detected interstitial deletion of chromosome 2q. Case Report: A fetus with increased nuchal translucency on routine ultrasound examination at 13 weeks' gestation was found to have severe upper-limb abnormalities on follow-up ultrasound examination at 16 weeks. The pregnancy was terminated, and the autopsy revealed monodactyly of the right upper limb, oligodactyly of the left upper limb and bilateral split foot, as well as atrial and ventricular septal defects and mild facial dysmorphism. Results: Cytogenetic studies and haplotype analysis of the fetus and both parents showed that the fetus carried a de novo deletion encompassing a region of about 30 Mb on the paternal chromosome 2q (karyotype 46,XX,del(2)(q24.2-q32. 2)). Conclusion: This is the first instance of increased nuchal translucency associated with a chromosome 2q deletion. Moreover, the striking malformations affecting all four of the fetus' limbs support previous suggestions that a novel locus for split-hand/foot malformation (SHFM5) lies on chromosome 2q31. Copyright © 2005 John Wiley & Sons, Ltd.
Original languageEnglish
Pages (from-to)39-44
JournalPrenatal Diagnosis
Volume25
Issue number1
DOIs
Publication statusPublished - 2005
Externally publishedYes

Cite this

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title = "Increased nuchal translucency and split-hand/foot malformation in a fetus with an interstitial deletion of chromosome 2q that removes the SHFM5 locus",
abstract = "Objectives: To describe and discuss the clinical, cytogenetic and molecular findings in a fetus with the first prenatally detected interstitial deletion of chromosome 2q. Case Report: A fetus with increased nuchal translucency on routine ultrasound examination at 13 weeks' gestation was found to have severe upper-limb abnormalities on follow-up ultrasound examination at 16 weeks. The pregnancy was terminated, and the autopsy revealed monodactyly of the right upper limb, oligodactyly of the left upper limb and bilateral split foot, as well as atrial and ventricular septal defects and mild facial dysmorphism. Results: Cytogenetic studies and haplotype analysis of the fetus and both parents showed that the fetus carried a de novo deletion encompassing a region of about 30 Mb on the paternal chromosome 2q (karyotype 46,XX,del(2)(q24.2-q32. 2)). Conclusion: This is the first instance of increased nuchal translucency associated with a chromosome 2q deletion. Moreover, the striking malformations affecting all four of the fetus' limbs support previous suggestions that a novel locus for split-hand/foot malformation (SHFM5) lies on chromosome 2q31. Copyright {\circledC} 2005 John Wiley & Sons, Ltd.",
author = "Bijlsma, {E. K.} and Knegt, {A. C.} and Bilardo, {C. M.} and Goodman, {F. R.}",
year = "2005",
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Increased nuchal translucency and split-hand/foot malformation in a fetus with an interstitial deletion of chromosome 2q that removes the SHFM5 locus. / Bijlsma, E. K.; Knegt, A. C.; Bilardo, C. M.; Goodman, F. R.

In: Prenatal Diagnosis, Vol. 25, No. 1, 2005, p. 39-44.

Research output: Contribution to journalArticleAcademicpeer-review

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AU - Bilardo, C. M.

AU - Goodman, F. R.

PY - 2005

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N2 - Objectives: To describe and discuss the clinical, cytogenetic and molecular findings in a fetus with the first prenatally detected interstitial deletion of chromosome 2q. Case Report: A fetus with increased nuchal translucency on routine ultrasound examination at 13 weeks' gestation was found to have severe upper-limb abnormalities on follow-up ultrasound examination at 16 weeks. The pregnancy was terminated, and the autopsy revealed monodactyly of the right upper limb, oligodactyly of the left upper limb and bilateral split foot, as well as atrial and ventricular septal defects and mild facial dysmorphism. Results: Cytogenetic studies and haplotype analysis of the fetus and both parents showed that the fetus carried a de novo deletion encompassing a region of about 30 Mb on the paternal chromosome 2q (karyotype 46,XX,del(2)(q24.2-q32. 2)). Conclusion: This is the first instance of increased nuchal translucency associated with a chromosome 2q deletion. Moreover, the striking malformations affecting all four of the fetus' limbs support previous suggestions that a novel locus for split-hand/foot malformation (SHFM5) lies on chromosome 2q31. Copyright © 2005 John Wiley & Sons, Ltd.

AB - Objectives: To describe and discuss the clinical, cytogenetic and molecular findings in a fetus with the first prenatally detected interstitial deletion of chromosome 2q. Case Report: A fetus with increased nuchal translucency on routine ultrasound examination at 13 weeks' gestation was found to have severe upper-limb abnormalities on follow-up ultrasound examination at 16 weeks. The pregnancy was terminated, and the autopsy revealed monodactyly of the right upper limb, oligodactyly of the left upper limb and bilateral split foot, as well as atrial and ventricular septal defects and mild facial dysmorphism. Results: Cytogenetic studies and haplotype analysis of the fetus and both parents showed that the fetus carried a de novo deletion encompassing a region of about 30 Mb on the paternal chromosome 2q (karyotype 46,XX,del(2)(q24.2-q32. 2)). Conclusion: This is the first instance of increased nuchal translucency associated with a chromosome 2q deletion. Moreover, the striking malformations affecting all four of the fetus' limbs support previous suggestions that a novel locus for split-hand/foot malformation (SHFM5) lies on chromosome 2q31. Copyright © 2005 John Wiley & Sons, Ltd.

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