rs375843284

Variant names:

• chr12-8855578-A-G
• rs375843284
• NM_144670.6:c.2834A>G

Your query was ambiguous. Multiple possible variants found:

• chr12-8855578-A-G
• chr12-8855578-A-T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_144670.6(A2ML1):​c.2834A>G​(p.Tyr945Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y945F) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: A2ML1 NM_144670.6 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.0840
• Publications: 0 publications found

Genes affected

A2ML1 (HGNC:23336): (alpha-2-macroglobulin like 1) This gene encodes a member of the alpha-macroglobulin superfamily. The encoded protein is thought to be an N-glycosylated monomeric protein that acts as an inhibitor of several proteases. It has been shown to form covalent interactions with proteases, and has been reported as the p170 antigen recognized by autoantibodies in the autoimmune disease paraneoplastic pemphigus (PNP; PMID:20805888). Mutations in these gene have also been associated with some cases of Noonan syndrome (NS; PMID:24939586) as well as some cases of otitis media (PMID:26121085). Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Aug 2015]

A2ML1 Gene-Disease associations (from GenCC):

• Noonan syndrome

  Inheritance: AD Classification: SUPPORTIVE, LIMITED, NO_KNOWN Submitted by: Orphanet, ClinGen, Genomics England PanelApp
• cardiofaciocutaneous syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Costello syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Noonan syndrome with multiple lentigines

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Noonan syndrome-like disorder with loose anagen hair

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16756827).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_144670.6. 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
	A2ML1	NM_144670.6	MANE Select	c.2834A>G	p.Tyr945Cys	missense	Exon 23 of 36	NP_653271.3	A8K2U0-1
	A2ML1	NM_001282424.3		c.1361A>G	p.Tyr454Cys	missense	Exon 12 of 25	NP_001269353.2	A8K2U0-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	A2ML1	ENST00000299698.12	TSL:1 MANE Select	c.2834A>G	p.Tyr945Cys	missense	Exon 23 of 36	ENSP00000299698.7	A8K2U0-1
	A2ML1	ENST00000541459.5	TSL:2	c.1484A>G	p.Tyr495Cys	missense	Exon 12 of 25	ENSP00000443174.1	H0YGG5
	A2ML1	ENST00000539547.5	TSL:2	c.1361A>G	p.Tyr454Cys	missense	Exon 12 of 25	ENSP00000438292.1	A8K2U0-2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.0000120 AC: 3 AN: 249550 AF XY: 0.0000222

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: 0.0000177

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461862 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 727228

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: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

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

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111992

Other (OTH) AF: 0.00 AC: 0 AN: 60392

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000675 Hom.: 0

ExAC AF: 0.00000827 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.39
CADD	Benign	17
DANN	Uncertain	0.99
DEOGEN2	Benign	0.17	T
Eigen	Benign	-0.34
Eigen_PC	Benign	-0.57
FATHMM_MKL	Benign	0.22	N
LIST_S2	Benign	0.85	T
M_CAP	Benign	0.0097	T
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Uncertain	2.2	M
PhyloP100		0.084
PrimateAI	Benign	0.35	T
PROVEAN	Uncertain	-4.1	D
REVEL	Benign	0.11
Sift	Benign	0.090	T
Sift4G	Benign	0.069	T
Polyphen		0.90	P
Vest4		0.49
MutPred		0.43		Loss of phosphorylation at Y945 (P = 0.0377)
MVP		0.10
MPC		0.45
ClinPred		0.57	D
GERP RS		-0.83
Varity_R		0.12
gMVP		0.23
Mutation Taster		=98/2	polymorphism

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: rs375843284; hg19: chr12-9008174;