1-223005219-A-T

Variant names:

• chr1-223005219-A-T
• rs9441941
• NM_001377229.1:c.3822A>T

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_001377229.1(DISP1):​c.3822A>T​(p.Pro1274Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,836 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. P1274P) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: DISP1 NM_001377229.1 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.900
• Publications: 17 publications found

Genes affected

DISP1 (HGNC:19711): (dispatched RND transporter family member 1) The pattern of cellular proliferation and differentiation that leads to normal development of embryonic structures often depends upon the localized production of secreted protein signals. Cells surrounding the source of a particular signal respond in a graded manner according to the effective concentration of the signal, and this response produces the pattern of cell types constituting the mature structure. A novel segment-polarity gene known as dispatched has been identified in Drosophila and its protein product is required for normal Hedgehog (Hh) signaling. This gene is one of two human homologs of Drosophila dispatched and, based on sequence identity to its mouse counterpart, the encoded protein may play an essential role in Hh patterning activities in the early embryo. [provided by RefSeq, Jul 2008]

DISP1 Gene-Disease associations (from GenCC):

• holoprosencephaly

  Inheritance: SD, AD, AR Classification: SUPPORTIVE, LIMITED Submitted by: Illumina, ClinGen, Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BP7: Synonymous conserved (PhyloP=-0.9 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001377229.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DISP1	NM_001377229.1	MANE Select	c.3822A>T	p.Pro1274Pro	synonymous	Exon 9 of 9	NP_001364158.1	Q96F81
	DISP1	NM_001369594.1		c.3822A>T	p.Pro1274Pro	synonymous	Exon 8 of 8	NP_001356523.1	Q96F81
	DISP1	NM_001377228.1		c.3822A>T	p.Pro1274Pro	synonymous	Exon 8 of 8	NP_001364157.1	Q96F81

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DISP1	ENST00000675850.1	MANE Select	c.3822A>T	p.Pro1274Pro	synonymous	Exon 9 of 9	ENSP00000502357.1	Q96F81
	DISP1	ENST00000284476.7	TSL:1	c.3822A>T	p.Pro1274Pro	synonymous	Exon 8 of 8	ENSP00000284476.6	Q96F81
	DISP1	ENST00000900747.1		c.3849A>T	p.Pro1283Pro	synonymous	Exon 8 of 8	ENSP00000570806.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00 AC: 0 AN: 250608 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS 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: 0.00000137 AC: 2 AN: 1461836 Hom.: 0 Cov.: 92 AF XY: 0.00 AC XY: 0 AN XY: 727208

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53364

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 9125

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.78
DANN	Benign	0.49
PhyloP100		-0.90
Mutation Taster		=100/0	polymorphism

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: rs9441941; hg19: chr1-223178561;