[Analysis of TSC2 gene variant in a neonate with tuberous sclerosis complex].

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.