chr1-61088233-C-T

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_001134673.4(NFIA):​c.112C>T​(p.Arg38*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,840 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 31)
Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

NFIA
NM_001134673.4 stop_gained

Scores

4
2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 2.12

Publications

0 publications found
Variant links:
Genes affected
NFIA (HGNC:7784): (nuclear factor I A) This gene encodes a member of the NF1 (nuclear factor 1) family of transcription factors. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]
NFIA Gene-Disease associations (from GenCC):
  • brain malformations with or without urinary tract defects
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen
  • chromosome 1p32-p31 deletion syndrome
    Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Illumina, Ambry Genetics

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 11 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 1-61088233-C-T is Pathogenic according to our data. Variant chr1-61088233-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 520757.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001134673.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
NFIA
NM_001134673.4
MANE Select
c.112C>Tp.Arg38*
stop_gained
Exon 2 of 11NP_001128145.1Q12857-1
NFIA
NM_001145512.2
c.247C>Tp.Arg83*
stop_gained
Exon 3 of 12NP_001138984.1Q12857-4
NFIA
NM_001145511.2
c.88C>Tp.Arg30*
stop_gained
Exon 2 of 11NP_001138983.1Q12857-3

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
NFIA
ENST00000403491.8
TSL:1 MANE Select
c.112C>Tp.Arg38*
stop_gained
Exon 2 of 11ENSP00000384523.3Q12857-1
NFIA
ENST00000371187.7
TSL:1
c.112C>Tp.Arg38*
stop_gained
Exon 2 of 10ENSP00000360229.3Q12857-2
NFIA
ENST00000476646.5
TSL:3
c.-30C>T
5_prime_UTR_premature_start_codon_gain
Exon 2 of 4ENSP00000474461.1S4R3K4

Frequencies

GnomAD3 genomes
Cov.:
31
GnomAD4 exome
AF:
0.00000137
AC:
2
AN:
1461840
Hom.:
0
Cov.:
31
AF XY:
0.00000275
AC XY:
2
AN XY:
727208
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
33476
American (AMR)
AF:
0.00
AC:
0
AN:
44720
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26132
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39700
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86258
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53402
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5768
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111988
Other (OTH)
AF:
0.00
AC:
0
AN:
60396
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.0448430), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.350
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
31
Alfa
AF:
0.00
Hom.:
0

ClinVar

ClinVar submissions
Significance:Conflicting classifications of pathogenicity
Revision:criteria provided, conflicting classifications
View on ClinVar
Pathogenic
VUS
Benign
Condition
1
-
-
Brain malformations with or without urinary tract defects (1)
-
1
-
Inborn genetic diseases (1)
1
-
-
not provided (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
0.63
D
BayesDel_noAF
Pathogenic
0.60
CADD
Pathogenic
46
DANN
Uncertain
1.0
Eigen
Pathogenic
0.86
Eigen_PC
Pathogenic
0.76
FATHMM_MKL
Uncertain
0.89
D
PhyloP100
2.1
Vest4
0.86
GERP RS
5.9
PromoterAI
-0.038
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.7
Mutation Taster
=0/200
disease causing (fs/PTC)

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs1553149167; hg19: chr1-61553905; COSMIC: COSV64537221; COSMIC: COSV64537221; API