NM_001190737.2:c.109C>T

Variant names:

• chr9-14307442-G-A
• rs1554709792
• NM_001190737.2:c.109C>T

Variant summary

Our verdict is Pathogenic. Variant got 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_001190737.2(NFIB):​c.109C>T​(p.Arg37*) variant causes a stop gained change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★★). Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 31)
• Consequence: NFIB NM_001190737.2 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:5
• Conservation: PhyloP100: 5.60

Genes affected

NFIB (HGNC:7785): (nuclear factor I B) Enables DNA-binding transcription activator activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and transcription regulator inhibitor activity. Involved in brain development; negative regulation of DNA binding activity; and regulation of transcription by RNA polymerase II. Located in fibrillar center and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Pathogenic. Variant got 18 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 9-14307442-G-A is Pathogenic according to our data. Variant chr9-14307442-G-A is described in ClinVar as [Pathogenic]. Clinvar id is 560024.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr9-14307442-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NFIB	NM_001190737.2	c.109C>T	p.Arg37*	stop_gained	Exon 2 of 11	ENST00000380953.6	NP_001177666.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NFIB	ENST00000380953.6	c.109C>T	p.Arg37*	stop_gained	Exon 2 of 11	1	NM_001190737.2	ENSP00000370340.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 31

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:5

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Macrocephaly, acquired, with impaired intellectual development Pathogenic:3

Oct 02, 2019

SIB Swiss Institute of Bioinformatics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: curation

This variant is interpreted as a Pathogenic for Macrocephaly, acquired, with impaired intellectual development, autosomal dominant. The following ACMG Tag(s) were applied: PM2, PVS1, PS2-Moderate. -

Jan 23, 2019

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Jan 03, 2022

3billion

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Stop-gained (nonsense): predicted to result in a loss or disruption of normal protein function through nonsense-mediated decay (NMD) or protein truncation. Multiple pathogenic variants are reported downstream of the variant (PVS1_VS).It is not observed in the gnomAD v2.1.1 dataset (PM2_M). The variant has been previously reported as de novo in a similarly affected individual (PMID:30388402, PS2_S). Therefore, this variant is classified as pathogenic according to the recommendation of ACMG/AMP guideline. -

Macrocephaly;C3714756:Intellectual disability Pathogenic:1

-

Department of Human Genetics, University Hospital Magdeburg

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: research

- -

not provided Pathogenic:1

Sep 17, 2023

GeneDx

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss-of-function is a known mechanism of disease; Not observed in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 30388402) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.55	D
BayesDel_noAF	Pathogenic	0.55
CADD	Pathogenic	57
DANN	Uncertain	1.0
Eigen	Pathogenic	0.93
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Uncertain	0.92	D
Vest4		0.80
GERP RS		5.7

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

LitVar

Other links and lift over

dbSNP: rs1554709792; hg19: chr9-14307441; COSMIC: COSV101100265;