8-41715748-G-T

Variant names:

• chr8-41715748-G-T
• rs34387324
• NM_000037.4:c.1506C>A

Variant summary

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

The NM_000037.4(ANK1):​c.1506C>A​(p.Ala502Ala) variant causes a synonymous 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. Synonymous variant affecting the same amino acid position (i.e. A502A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: ANK1 NM_000037.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.47
• Publications: 2 publications found

Genes affected

ANK1 (HGNC:492): (ankyrin 1) Ankyrins are a family of proteins that link the integral membrane proteins to the underlying spectrin-actin cytoskeleton and play key roles in activities such as cell motility, activation, proliferation, contact and the maintenance of specialized membrane domains. Multiple isoforms of ankyrin with different affinities for various target proteins are expressed in a tissue-specific, developmentally regulated manner. Most ankyrins are typically composed of three structural domains: an amino-terminal domain containing multiple ankyrin repeats; a central region with a highly conserved spectrin binding domain; and a carboxy-terminal regulatory domain which is the least conserved and subject to variation. Ankyrin 1, the prototype of this family, was first discovered in the erythrocytes, but since has also been found in brain and muscles. Mutations in erythrocytic ankyrin 1 have been associated in approximately half of all patients with hereditary spherocytosis. Complex patterns of alternative splicing in the regulatory domain, giving rise to different isoforms of ankyrin 1 have been described. Truncated muscle-specific isoforms of ankyrin 1 resulting from usage of an alternate promoter have also been identified. [provided by RefSeq, Dec 2008]

ANK1 Gene-Disease associations (from GenCC):

• hereditary spherocytosis

  Inheritance: AR, AD Classification: DEFINITIVE, SUPPORTIVE, LIMITED Submitted by: ClinGen, Orphanet
• hereditary spherocytosis type 1

  Inheritance: AD, AR Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Laboratory for Molecular Medicine, Ambry Genetics

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=-0.75).
• BP7: Synonymous conserved (PhyloP=-4.47 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000037.4. 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
	ANK1	NM_000037.4	MANE Select	c.1506C>A	p.Ala502Ala	synonymous	Exon 14 of 43	NP_000028.3
	ANK1	NM_001142446.2		c.1605C>A	p.Ala535Ala	synonymous	Exon 14 of 43	NP_001135918.1	P16157-21
	ANK1	NM_020476.3		c.1506C>A	p.Ala502Ala	synonymous	Exon 14 of 42	NP_065209.2	P16157-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ANK1	ENST00000289734.13	TSL:1 MANE Select	c.1506C>A	p.Ala502Ala	synonymous	Exon 14 of 43	ENSP00000289734.8	P16157-3
	ANK1	ENST00000265709.14	TSL:1	c.1605C>A	p.Ala535Ala	synonymous	Exon 14 of 43	ENSP00000265709.8	P16157-21
	ANK1	ENST00000347528.8	TSL:1	c.1506C>A	p.Ala502Ala	synonymous	Exon 14 of 42	ENSP00000339620.4	P16157-1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	0.14
DANN	Benign	0.76
PhyloP100		-4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs34387324; hg19: chr8-41573266;