Table 2. Clinical and genetic characteristics of individuals identified with THOC2 gene-related diseases reported in medical literature.
aa: amino acid, acm: abnormal cerebral myelination, acv: abnormal cerebellar vermis, AP: anxiety problem, b: borderline intellectual disability, BHF: broad high forehead, BP: behaviour problems, ca: cerebellar atrophy, CCC: cervical cord compression, ch: cranial hyperostosis, CHD: congenital hip dysplasia, cvd: cerebellar vermis dysplasia, cvi: cortical visual impairment, D: depression, dm: delayed myelination, Epi: epilepsy, Fam ID: family ID, GD: gait disturbances, ghd: growth hormone deficiency, glio: gliosis, gmh: gray matter heterotopia, HT: hypotonia, HK: hyperkinesia, Idl: intellectual disability, ipf: idiopathic pulmonary fibrosis, jl: joint laxity, LBW: low birth weight, LE: large ears, lvw: increased left ventricular wall thickness on 2d echo, lbv: low brainstem volume, LBW: low birth weight, m: moderate intellectual disability, mi :mild intellectual disability, Mic: microcephaly, mut cDNA: mutation in cDNA format, mut prot: mutation in protein change format, N: No, nd: not documented, nf: Noonan facies, NI: neuroimaging find ngs, nr: normal, nys: nystagmus, OF: other features, OW: overweight, p: profound intellectual disability, PM: prematurity, pvm: periventricular white matter abnormality, ref: reference, rpp: right perisylvian polymicrogyria, s: severe intellectual disability, sh: subluxed hips, sm: small midbrain, stm:stereotypic movements, SS: short stature, tcc: thin corpus callosum, Tr: tremor, tw: toe walking, uls: upper limb spasticity, vgp: variability in gyral pattern, VM: cerebral ventriculomegaly, Y:Yes
| Ref | Fam ID | Case ID | Age | PM | LBW | Idl | SD | HT | HK | Tr | Epi | GD | BP | AP | D | Mic | SS | OW | BHF | LE | NI | OF | Mut cDNA | Mut Prot |
| [7] | 1 | 1 | 9 | N | N | m | Y | Y | N | N | Y | Y | Y | N | N | N | N | nd | N | N | nd | c.3034T>C | p.S1012P | |
| 2 | 5 | N | N | b | N | Y | N | N | N | N | N | N | N | N | N | nd | N | N | nd | c.3034T>C | p.S1012P | |||
| 3 | 21 | N | Y | m | Y | Y | N | N | Y | N | N | N | N | Y | N | nd | N | N | nd | c.3034T>C | p.S1012P | |||
| 2 | 4 | 77 | Y | N | m | Y | Y | N | N | N | N | N | N | N | N | Y | N | N | Y | nd | ipf | c.1313T>C | p.L438P | |
| 5 | 61 | Y | N | s | N | Y | N | Y | N | Y | N | Y | N | Y | Y | Y | Y | Y | ccc, glio | c.1313T>C | p.L438P | |||
| 6 | 63 | N | N | m | Y | N | N | Y | N | Y | Y | Y | Y | N | Y | Y | N | Y | nd | c.1313T>C | p.L438P | |||
| 7 | 51 | N | Y | mi | Y | N | N | Y | N | N | N | N | N | Y | Y | N | N | N | nd | c.1313T>C | p.L438P | |||
| 8 | 51 | N | N | mi | Y | N | N | Y | N | N | N | N | Y | N | Y | Y | N | N | nd | lvw | c.1313T>C | p.L438P | ||
| 9 | 30 | Y | Y | mi | Y | Y | N | Y | N | N | N | N | N | N | Y | Y | Y | N | nr | c.1313T>C | p.L438P | |||
| 10 | 14 | N | N | m | Y | Y | N | N | N | N | N | N | N | Y | Y | N | N | N | nd | c.1313T>C | p.L438P | |||
| 11 | 9 | N | Y | mi | Y | Y | N | N | N | N | N | N | N | Y | Y | N | N | N | nr | ghd | c.1313T>C | p.L438P | ||
| 3 | 12 | 44 | N | N | m | Y | N | Y | N | N | N | Y | N | N | N | Y | Y | N | N | nd | c.2399T>C | p.I800T | ||
| 13 | 43 | N | N | s | Y | Y | N | N | Y | Y | Y | N | N | N | Y | Y | N | N | vm | c.2399T>C | p.I800T | |||
| 14 | 42 | N | N | m | Y | N | N | N | N | N | N | N | N | N | Y | Y | N | N | nd | c.2399T>C | p.I800T | |||
| 15 | 34 | N | N | m | Y | N | N | N | N | N | Y | N | N | N | Y | Y | N | N | nd | c.2399T>C | p.I800T | |||
| 16 | 30 | N | N | m | N | N | Y | N | N | N | Y | N | N | N | N | Y | Y | N | nd | c.2399T>C | p.I800T | |||
| 17 | 28 | N | N | m | N | N | Y | N | N | N | Y | N | N | N | Y | N | Y | N | nd | c.2399T>C | p.I800T | |||
| 4 | 18 | 24 | N | N | s | Y | Y | Y | Y | Y | Y | Y | N | N | N | N | N | N | N | vm, ch | stm, uls | c.937C>T | p.L313F | |
| 19 | 30 | N | N | m | N | N | N | Y | Y | N | Y | N | N | N | N | Y | N | N | cvd | c.937C>T | p.L313F | |||
| 20 | 38 | Y | N | mi | N | N | N | Y | N | N | N | N | N | N | N | N | N | N | nd | uls, chd | c.937C>T | p.L313F | ||
| [8] | 5 | 21 | 12 | Y | Y | s | Y | N | N | N | N | N | N | N | N | Y | Y | N | Y | nd | nr | c.2087C>T | p.T696I | |
| 6 | 22 | 5 | N | N | m | Y | Y | N | Y | Y | Y | Y | N | N | Y | Y | N | Y | nd | tcc, lbv, vgp | tw, jl, sh | c.2138G>A | p.G713D | |
| 7 | 23 | 7 | N | Y | m | Y | nd | Y | N | N | Y | Y | N | N | N | N | N | Y | nd | nd | tw, nf | c.3559C>T | p.H1187Y | |
| 8 | 24 | 7 | N | Y | m | Y | nd | Y | N | N | Y | Y | N | N | N | N | N | Y | nd | nd | nf | c.3559C>T | p.H1187Y | |
| 9 | 25 | 3 | N | N | s | Y | Y | Y | N | N | Y | Y | N | N | N | N | N | N | nd | vd, dm, pvm | c.3503+4A>C | p.G1168fs7X | ||
| 10 | 26 | 10 | N | N | s | Y | Y | N | Y | N | Y | N | N | N | Y | N | N | N | nd | nr | nys | c.4450-2A>G | p.R1483fs52X | |
| 11 | 27 | 10 | nd | nd | p | Y | Y | N | N | Y | Y | nd | N | nd | N | N | N | nd | nd | nr | cvi | c.1550A>G | p.Y517C | |
| [9] | 12 | 28 | 6 | N | Y | p | Y | Y | Y | N | Y | Y | N | N | N | Y | Y | N | nd | nd | dm, vm, sm | c.229C>T | p.R77C | |
| 13 | 29 | 5 | N | N | p | Y | N | N | N | N | N | N | N | N | Y | N | N | nd | nd | acm | c.1966A>G | p.N666D | ||
| 14 | 30 | 20 | Y | Y | s | Y | Y | N | N | N | Y | N | N | N | Y | Y | N | nd | nd | vm | c.2170A>G | p.K724E | ||
| 15 | 31 | 5 | N | N | N | Y | N | N | N | N | Y | N | N | N | N | N | N | nd | nd | nr | c.2642A>G | p.Y881C | ||
| 16 | 32 | 15 | N | N | s | Y | Y | N | N | N | Y | N | N | N | N | Y | N | nd | nd | nd | c.2942G>A | p.C981Y | ||
| 33 | 10 | N | N | s | Y | Y | N | N | N | Y | Y | N | N | N | Y | N | nd | nd | ca, pvm | c.2942G>A | p.C981Y | |||
| 17 | 34 | 2.5 | N | N | m | Y | Y | N | N | Y | Y | N | N | N | Y | N | N | nd | nd | gmh | c.3223C>T | p.R1075W | ||
| 18 | 35 | 4.5 | N | N | s | Y | Y | N | N | N | Y | N | N | N | N | N | N | nd | nd | dm, rpp | c.3300G>T | p.W1100C | ||
| 19 | 36 | 2 | N | Y | s | Y | Y | N | N | Y | Y | N | N | N | N | Y | N | nd | nd | vm, sm, acv | c.4646A>G | p.K1549R | ||
| 20 | 37 | 11 | N | N | m | Y | Y | N | N | Y | Y | N | N | N | Y | N | N | nd | nd | acm | delex37,38 | C terminus 34 aa deletion |