chr14-102930121-CTCGCCCCGCCGCGGG-C

Variant names:

• chr14-102930121-CTCGCCCCGCCGCGGG-C
• rs386834162
• NM_030943.4:c.1006+36_1007-29delTCGCCCCGCCGCGGG

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP5

The NM_030943.4(AMN):​c.1006+36_1007-29delTCGCCCCGCCGCGGG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. Variant has been reported in ClinVar as Likely pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: AMN NM_030943.4 intron
• Clinical Significance: Likely pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.413
• Publications: 0 publications found

Genes affected

AMN (HGNC:14604): (amnion associated transmembrane protein) The protein encoded by this gene is a type I transmembrane protein. It is thought to modulate bone morphogenetic protein (BMP) receptor function by serving as an accessory or coreceptor, and thus facilitates or hinders BMP binding. It is known that the mouse AMN gene is expressed in the extraembryonic visceral endoderm layer during gastrulation, but it is found to be mutated in amnionless mouse. The encoded protein has sequence similarity to short gastrulation (Sog) and procollagen IIA proteins in Drosophila. [provided by RefSeq, Jul 2008]

AMN Gene-Disease associations (from GenCC):

• Imerslund-Grasbeck syndrome type 1

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• Imerslund-Grasbeck syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PP5: Variant 14-102930121-CTCGCCCCGCCGCGGG-C is Pathogenic according to our data. Variant chr14-102930121-CTCGCCCCGCCGCGGG-C is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 56743.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AMN	NM_030943.4	c.1006+36_1007-29delTCGCCCCGCCGCGGG		intron_variant	Intron 9 of 11	ENST00000299155.10	NP_112205.2
AMN	NM_001425246.1	c.844+36_845-29delTCGCCCCGCCGCGGG		intron_variant	Intron 9 of 11		NP_001412175.1
AMN	XM_011537203.4	c.844+36_845-29delTCGCCCCGCCGCGGG		intron_variant	Intron 9 of 11		XP_011535505.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AMN	ENST00000299155.10	c.1006+36_1007-29delTCGCCCCGCCGCGGG		intron_variant	Intron 9 of 11	1	NM_030943.4	ENSP00000299155.6

Frequencies

GnomAD3 genomes Cov.: 33

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

GnomAD4 genome Cov.: 33

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Imerslund-Grasbeck syndrome Pathogenic:1

-

Juha Muilu Group; Institute for Molecular Medicine Finland (FIMM)

Significance: Likely pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.41
Mutation Taster		=31/69	disease causing (ClinVar)

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs386834162; hg19: chr14-103396458;