Variant chr1-16589957-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001405667.2(NBPF1):c.220G>A(p.Glu74Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000699 in 1,429,628 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 8/11 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: not found (cov: 46)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

NBPF1
NM_001405667.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -0.884

Variant links:

Genes affected

NBPF1 (HGNC:26088): (NBPF member 1) This gene is a member of the neuroblastoma breakpoint family (NBPF) which consists of dozens of recently duplicated genes primarily located in segmental duplications on human chromosome 1. This gene family has experienced its greatest expansion within the human lineage and has expanded, to a lesser extent, among primates in general. Members of this gene family are characterized by tandemly repeated copies of DUF1220 protein domains. Gene copy number variations in the human chromosomal region 1q21.1, where most DUF1220 domains are located, have been implicated in a number of developmental and neurogenetic diseases such as microcephaly, macrocephaly, autism, schizophrenia, cognitive disability, congenital heart disease, neuroblastoma, and congenital kidney and urinary tract anomalies. Altered expression of some gene family members is associated with several types of cancer. This gene family contains numerous pseudogenes. [provided by RefSeq, Apr 2013]

NBPF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.077477425).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	Protein
NBPF1	NM_001405667.2 linkuse as main transcript	c.220G>A	p.Glu74Lys	missense_variant	8/29	NP_001392596.1
NBPF1	NM_001405680.2 linkuse as main transcript	c.220G>A	p.Glu74Lys	missense_variant	8/29	NP_001392609.1
NBPF1	NM_001405681.2 linkuse as main transcript	c.220G>A	p.Glu74Lys	missense_variant	8/29	NP_001392610.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NBPF1	ENST00000430580.6 linkuse as main transcript	c.220G>A	p.Glu74Lys	missense_variant	8/29	5		ENSP00000474456.1		Q3BBV0-2
NBPF1	ENST00000392963.5 linkuse as main transcript	n.175+1890G>A		intron_variant		5		ENSP00000473795.1		S4R2Z6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000406

AC:

AN:

246384

Hom.:

AF XY:

0.00000746

AC XY:

AN XY:

133990

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000562

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

6.99e-7

AC:

AN:

1429628

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

712828

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.21e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 25, 2024

The c.220G>A (p.E74K) alteration is located in exon 8 (coding exon 2) of the NBPF1 gene. This alteration results from a G to A substitution at nucleotide position 220, causing the glutamic acid (E) at amino acid position 74 to be replaced by a lysine (K). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.83

CADD

Benign

7.3

DANN

Benign

0.25

FATHMM_MKL

Benign

0.00031

LIST_S2

Benign

0.79

T;T

M_CAP

Benign

0.0035

MetaRNN

Benign

0.077

T;T

PrimateAI

Uncertain

0.58

Sift4G

Uncertain

0.049

D;T

Vest4

0.19

MVP

0.28

GERP RS

-0.95

gMVP

0.051

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over