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A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report

Neurofibromatosis-Noonan syndrome (NFNS), a rare autosomal-dominant hereditary disease, is characterized by clinical manifestations of both neurofibromatosis type 1 (NF1) and NS. We present a case of NFNS with short stature caused by a heterozygous nonsense variant of the NF1 gene. A 12-year-old boy...

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Autores principales: Qin, Si, Zhang, Yindi, Yu, Fadong, Ni, Yinxing, Zhong, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Galenos Publishing 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10683535/
https://www.ncbi.nlm.nih.gov/pubmed/35633639
http://dx.doi.org/10.4274/jcrpe.galenos.2022.2021-12-24
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author Qin, Si
Zhang, Yindi
Yu, Fadong
Ni, Yinxing
Zhong, Jian
author_facet Qin, Si
Zhang, Yindi
Yu, Fadong
Ni, Yinxing
Zhong, Jian
author_sort Qin, Si
collection PubMed
description Neurofibromatosis-Noonan syndrome (NFNS), a rare autosomal-dominant hereditary disease, is characterized by clinical manifestations of both neurofibromatosis type 1 (NF1) and NS. We present a case of NFNS with short stature caused by a heterozygous nonsense variant of the NF1 gene. A 12-year-old boy was admitted because of short stature, numerous café-au-lait spots, low-set and posteriorly rotated ears, sparse eyebrows, broad forehead, and inverted triangular face. Cranial and spinal magnetic resonance imaging showed abnormal nodular lesions. Molecular analysis revealed a novel heterozygous c.6189 C > G (p.(Tyr2063*)) variant in the NF1 gene. The patient was not prescribed recombinant growth hormone (GH) therapy because exogenous GH may have enlarged the abnormal skeletal lesions. During follow-up, Lisch nodules were found in the ophthalmologic examination. NFNS, a variant form of NF1, is caused by heterozygous mutations in the NF1 gene. The mechanism of GH deficiency caused by NF1 is still unclear. Whether NFNS patients should be treated with exogenous GH remains controversial.
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spelling pubmed-106835352023-12-01 A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report Qin, Si Zhang, Yindi Yu, Fadong Ni, Yinxing Zhong, Jian J Clin Res Pediatr Endocrinol Case Report Neurofibromatosis-Noonan syndrome (NFNS), a rare autosomal-dominant hereditary disease, is characterized by clinical manifestations of both neurofibromatosis type 1 (NF1) and NS. We present a case of NFNS with short stature caused by a heterozygous nonsense variant of the NF1 gene. A 12-year-old boy was admitted because of short stature, numerous café-au-lait spots, low-set and posteriorly rotated ears, sparse eyebrows, broad forehead, and inverted triangular face. Cranial and spinal magnetic resonance imaging showed abnormal nodular lesions. Molecular analysis revealed a novel heterozygous c.6189 C > G (p.(Tyr2063*)) variant in the NF1 gene. The patient was not prescribed recombinant growth hormone (GH) therapy because exogenous GH may have enlarged the abnormal skeletal lesions. During follow-up, Lisch nodules were found in the ophthalmologic examination. NFNS, a variant form of NF1, is caused by heterozygous mutations in the NF1 gene. The mechanism of GH deficiency caused by NF1 is still unclear. Whether NFNS patients should be treated with exogenous GH remains controversial. Galenos Publishing 2023-12 2023-11-22 /pmc/articles/PMC10683535/ /pubmed/35633639 http://dx.doi.org/10.4274/jcrpe.galenos.2022.2021-12-24 Text en ©Copyright 2023 by Turkish Pediatric Endocrinology and Diabetes Society | The Journal of Clinical Research in Pediatric Endocrinology published by Galenos Publishing House. https://creativecommons.org/licenses/by-nc-nd/4.0/Licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND) International License.
spellingShingle Case Report
Qin, Si
Zhang, Yindi
Yu, Fadong
Ni, Yinxing
Zhong, Jian
A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title_full A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title_fullStr A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title_full_unstemmed A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title_short A Novel Heterozygous NF1 Variant in a Neurofibromatosis-Noonan Syndrome Patient with Growth Hormone Deficiency: A Case Report
title_sort novel heterozygous nf1 variant in a neurofibromatosis-noonan syndrome patient with growth hormone deficiency: a case report
topic Case Report
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10683535/
https://www.ncbi.nlm.nih.gov/pubmed/35633639
http://dx.doi.org/10.4274/jcrpe.galenos.2022.2021-12-24
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