1naresh
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Mutation Sex Age Presentation Age Follow-up Macrocephaly Seizures Spasticity Bulbar signs Cognitive impairment MRI Reference 1* F 7 m 19 y + + + – + T 6 R79C 235 c → t 2* M 3 m 14 y 17 3* M 11 m 7 y 4† 0 m 7.5 y – + –→ + – –→ + T R79H 250 g → a 5† 6 m 20 y – + –→ + – –→ + T 15 6† 6 m 4.7 y – + – – – T 7† F 12 m 8 y 17 8* M Asymptomatic at 4 y – – – – – T 14 R88C 276 c → t 9* M Asymptomatic at 3 y + – – – – T 18 10* 6 m 3.5 y – – – – – T 15 L90P 283 c → t 11†§ F 5 m 5.9 y – + –→ + – –→ + T 16 R239C 716 c → t 12† M 8 m 8 y + + – + + T 13¶ 18 m 8 y – + –→ + – –→ + T 15 A253G 758 g → t 14¶§ M <12 m 8 y – – – + – A 19 15 ¶§ M 1 m – – – – – A 6 L331P 1006 c → t 16¶§ M Asymptomatic + – – – – T 20 17¶§ F Asymptomatic at 7 y – – – – – A A358V 1087 c → t 18† F 3 m 5 y + + – – – T Present R416W 1260 c → t 19* M Asymptomatic at 11 y – – – – – T 14
* Note:— indicates previously proven pathogenic mutation;
† , absence of the mutation in both parents;
¶ , absence of the mutation in one parent;
§ , absence of the mutation in healthy control subjects; m, months; y, years; †, presence; –, absence; T, typical; A, atypical.