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[Analysis of TSC2 gene variant in a neonate with tuberous sclerosis complex]
1Department of Neonatology, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, Zhejiang 310052, China. chebq@zju.edu.cn.
Objective:
To explore the clinical characteristics and genetic variant in a neonate with tuberous sclerosis complex (TSC).
Methods:
Clinical data of the neonate was collected. Genomic DNA was extracted from peripheral blood samples of the child and his parents and subjected to next-generation sequencing (NGS).
Results:
The child was noted to have yellowish hair upon birth. NGS revealed that he has harbored a heterozygous c.3914del (p.P1305Rfs*20) frameshifting variant of the TSC2 gene. The variant has probably caused premature termination of translation, resulting in a truncated protein.
Conclusion:
Yellowish hair has rarely been described as the first manifestation of TSC. The c.3914del (p.P1305Rfs*20) variant of the TSC2 gene probably underlay the TSC in this patient.
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