Additional file 2: of Clinical and genetic characteristics of Chinese patients with familial or sporadic pediatric cataract

Table S2. The primers for haplotype analysis and allele specific PCR. (XLS 25 kb

Additional file 4: of Clinical and genetic characteristics of Chinese patients with familial or sporadic pediatric cataract

Table S4. Pediatric cataract families with uncertain significance variants. (XLS 29 kb

Additional file 5: of Clinical and genetic characteristics of Chinese patients with familial or sporadic pediatric cataract

Figure S1. Pedigrees of the families without suspected causative variants. (TIF 8488 kb

Additional file 3: of Clinical and genetic characteristics of Chinese patients with familial or sporadic pediatric cataract

Table S3. Target NGS analysis. (XLS 28 kb

Table_1_Novel Compound Heterozygous Mutations in TTI2 Cause Syndromic Intellectual Disability in a Chinese Family.docx

Telomere maintenance 2 (TELO2)–interacting protein 2 (TTI2) interacts with TTI1 and TELO2 to form the Triple T complex, which is required for various cellular processes, including the double-strand DNA break response, nonsense-mediated mRNA decay, and telomerase assembly. Herein, we identified compound heterozygous mutations in TTI2 using whole-exome sequencing (WES) in a Chinese family with a recessive inheritance pattern of syndromic intellectual disability. The patients displayed intellectual disability, aggressive and self-injurious behaviors, facial dysmorphic features, microcephaly, and skeletal anomalies. In addition, one patient showed cerebral white matter abnormality. Maternal novel indel mutation resulted in a premature termination codon and nonsense-mediated mRNA decay. Paternal reported c.1100C > T mutation changed the highly conserved proline to leucine that located in the DUF2454 domain. Immunoblotting experiments showed significantly decreased TTI2, TTI1, and TELO2 in the patients’ lymphocytes. These results indicated that TTI2 loss-of-function mutations might cause an autosomal-recessive syndromic intellectual disability by affecting the Triple T complex. Our report expands the genetic causes of syndromic intellectual disability in the Chinese population.</p

Additional file 1: of Clinical and genetic characteristics of Chinese patients with familial or sporadic pediatric cataract

Table S1. List of 80 pediatric cataract genes. (XLS 36 kb

MOESM1 of Homozygous missense variant in the TTN gene causing autosomal recessive limb-girdle muscular dystrophy type 10

Additional file 1: Table S1. Filtering steps followed to search for the candidate variant