Abstract
BACKGROUND
Nager syndrome is a rare genetic syndrome characterized by craniofacial and preaxial limb anomalies. Haploinsufficiency of the SF3B4 gene has been identified as a significant reason for Nager syndrome. Treacher Collins syndrome (TCS) has similar facial features; however, the TCOF1, POLR1D, and POLR1C genes have been reported as the critical disease-causing genes. Similar phenotypes make it easy to misdiagnose.
CASE REPORT
In this report, we have presented a case of one newborn with acrofacial dysostosis, who was first diagnosed with TCS. Expanded next-generation sequencing eventually detected a (c.1A>G) heterozygous mutation in the SF3B4 gene at chr1:149899651 that was confirmed by Sanger sequencing. Combined with his preaxial limb anomalies discovered after his death, a diagnosis of Nager syndrome was made.
CONCLUSIONS
This report presents one patient with Nager syndrome who was initially misdiagnosed with TCS. Correct genetic testing will be beneficial to future prenatal diagnosis.
TY - JOUR
T1 - Broad-spectrum next-generation sequencing-based diagnosis of a case of Nager syndrome.
AU - Zhao,Jue,
AU - Yang,Liwei,
Y1 - 2020/06/14/
PY - 2020/02/29/received
PY - 2020/05/18/revised
PY - 2020/05/19/accepted
PY - 2020/6/17/pubmed
PY - 2021/7/6/medline
PY - 2020/6/16/entrez
KW - Nager syndrome
KW - SF3B4 mutation
KW - Treacher collins syndrome
KW - acrofacial dysostosis
KW - next-generation sequencing
SP - e23426
EP - e23426
JF - Journal of clinical laboratory analysis
JO - J Clin Lab Anal
VL - 34
IS - 9
N2 - BACKGROUND: Nager syndrome is a rare genetic syndrome characterized by craniofacial and preaxial limb anomalies. Haploinsufficiency of the SF3B4 gene has been identified as a significant reason for Nager syndrome. Treacher Collins syndrome (TCS) has similar facial features; however, the TCOF1, POLR1D, and POLR1C genes have been reported as the critical disease-causing genes. Similar phenotypes make it easy to misdiagnose. CASE REPORT: In this report, we have presented a case of one newborn with acrofacial dysostosis, who was first diagnosed with TCS. Expanded next-generation sequencing eventually detected a (c.1A>G) heterozygous mutation in the SF3B4 gene at chr1:149899651 that was confirmed by Sanger sequencing. Combined with his preaxial limb anomalies discovered after his death, a diagnosis of Nager syndrome was made. CONCLUSIONS: This report presents one patient with Nager syndrome who was initially misdiagnosed with TCS. Correct genetic testing will be beneficial to future prenatal diagnosis.
SN - 1098-2825
UR - https://www.unboundmedicine.com/medline/citation/32537850/Broad_spectrum_next_generation_sequencing_based_diagnosis_of_a_case_of_Nager_syndrome_
L2 - https://doi.org/10.1002/jcla.23426
DB - PRIME
DP - Unbound Medicine
ER -