Activity

Filter

Cancel
Date Panel Item Activity
10 actions
Mendeliome v1.1583 NIT1 Ain Roesley Marked gene: NIT1 as ready
Mendeliome v1.1583 NIT1 Ain Roesley Gene: nit1 has been classified as Green List (High Evidence).
Mendeliome v1.1583 NIT1 Zornitza Stark Marked gene: NIT1 as ready
Mendeliome v1.1583 NIT1 Zornitza Stark Gene: nit1 has been classified as Green List (High Evidence).
Mendeliome v1.1583 NIT1 Ain Roesley Classified gene: NIT1 as Green List (high evidence)
Mendeliome v1.1583 NIT1 Ain Roesley Gene: nit1 has been classified as Green List (High Evidence).
Mendeliome v1.1582 NIT1 Zornitza Stark Classified gene: NIT1 as Green List (high evidence)
Mendeliome v1.1582 NIT1 Zornitza Stark Gene: nit1 has been classified as Green List (High Evidence).
Mendeliome v1.1581 NIT1 Paul De Fazio edited their review of gene: NIT1: Changed rating: GREEN
Mendeliome v1.1580 NIT1 Paul De Fazio gene: NIT1 was added
gene: NIT1 was added to Mendeliome. Sources: Literature
Mode of inheritance for gene: NIT1 was set to BIALLELIC, autosomal or pseudoautosomal
Publications for gene: NIT1 were set to 38430071
Phenotypes for gene: NIT1 were set to Cerebrovascular disorder, NIT1-related (MONDO:0011057)
Penetrance for gene: NIT1 were set to unknown
gene: NIT1 was marked as current diagnostic
Added comment: 5 unrelated families reported with recessively inherited cerebral small vessel disease had compound hetereozygous or homozygous variants in NIT1. 1 family (3 siblings) had p.(Ala68*) in trans with p.(Arg243Trp), the remaining 4 families (1 individual each) were all homozygous for p.(Arg243Trp).

Patients presented in mid-adulthood with progressive movement disorders (e.g. dystonia, chorea, bradykinesia and tremor, gait disturbance, dysarthria) and had abnormal brain MRI findings (honeycomb appearance of the basal ganglia-thalamus complex, due to numerous strongly dilated PVS). 3 patients had non-lobar intracerebral hemorrhage. Slowly progressive cognitive decline was also a key feature.

Metabolic analysis in urine confirmed loss of NIT1 enzymatic function.

Note p.(Arg243Trp) has 1 homozygote in gnomAD v4, but permitted due to later presentation in reported patients.
Sources: Literature