A biomarker for
Tuberous sclerosis complex (TSC) with no
mutation identified (NMI) in the TSC1 or TSC2
gene and a use thereof is provided. The biomarker is the expression level of IQGAP2
gene. The present disclosure analyzed and compared the whole-
exon sequencing / clinical whole-
exon sequencing results of TSC-NMI (No
Mutation Identified, i.e.,
tuberous sclerosis complex with no
mutation identified (NMI) in the TSC1 or TSC2
gene) patients with those of TSC patients having pathogenic mutations in TSC1 and TSC2 gene, and found a number of potential pathogenic candidate genes for TSC-NMI. Based on the long-term accumulated experience and
experimental validation in this field, it was finally found that the IQGAP2 gene is related to TSC-NMI. Thus, IQGAP2 gene can be detected, and used as a detection marker for TSC-NMI and has potential as a
drug target for treating the TSC-NMI patients.