chr8-41797609-TCA-T

Variant names:

• chr8-41797609-TCA-T
• rs786205242
• NM_000037.4:c.-73_-72delTG

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_000037.4(ANK1):​c.-73_-72delTG variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as no classifications from unflagged records (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ANK1 NM_000037.4 5_prime_UTR
• Clinical Significance: no classifications from unflagged records no classifications from unflagged records P:1
• Conservation: PhyloP100: -0.0890
• Publications: 0 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: AR, AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Laboratory for Molecular Medicine

ENSG00000289514 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANK1	NM_000037.4	c.-73_-72delTG		5_prime_UTR_variant	Exon 1 of 43	ENST00000289734.13	NP_000028.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANK1	ENST00000289734.13	c.-73_-72delTG		5_prime_UTR_variant	Exon 1 of 43	1	NM_000037.4	ENSP00000289734.8

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Significance: no classifications from unflagged records

Submissions summary: Pathogenic:1

Revision: no classifications from unflagged records

Submissions by phenotype

SPHEROCYTOSIS, TYPE 1, AUTOSOMAL RECESSIVE Pathogenic:1

Sep 01, 2005

OMIM

Significance: Pathogenic

Review Status: flagged submission

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		-0.089
Mutation Taster		=6/294	disease causing (ClinVar)

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: rs786205242; hg19: chr8-41655127;