chr1-21470123-A-C

Variant names:

• chr1-21470123-A-C
• rs7537914
• NM_032264.6:c.344-509A>C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_032264.6(NBPF3):​c.344-509A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts 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: 31)
• Consequence: NBPF3 NM_032264.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.778
• Publications: 18 publications found

Genes affected

NBPF3 (HGNC:25076): (NBPF member 3) 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. DUF1220 copy number variations in 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, Feb 2013]

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032264.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NBPF3	NM_032264.6	MANE Select	c.344-509A>C		intron	N/A	NP_115640.1
	NBPF3	NM_001256416.4		c.344-509A>C		intron	N/A	NP_001243345.1
	NBPF3	NM_001330381.3		c.176-509A>C		intron	N/A	NP_001317310.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NBPF3	ENST00000318249.10	TSL:1 MANE Select	c.344-509A>C		intron	N/A	ENSP00000316782.5
	NBPF3	ENST00000434838.6	TSL:5	n.*932-509A>C		intron	N/A	ENSP00000391865.2
	NBPF3	ENST00000342104.9	TSL:2	c.344-509A>C		intron	N/A	ENSP00000340336.5

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 121666

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	3.8
DANN	Benign	0.29
PhyloP100		0.78

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

Other links and lift over

dbSNP: rs7537914; hg19: chr1-21796616;