chr3-38141146-C-G

Variant names:

• chr3-38141146-C-G
• rs748659894
• NM_002468.5:c.751C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_002468.5(MYD88):​c.751C>G​(p.Arg251Gly) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MYD88 NM_002468.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.77
• Publications: 0 publications found

Genes affected

MYD88 (HGNC:7562): (MYD88 innate immune signal transduction adaptor) This gene encodes a cytosolic adapter protein that plays a central role in the innate and adaptive immune response. This protein functions as an essential signal transducer in the interleukin-1 and Toll-like receptor signaling pathways. These pathways regulate that activation of numerous proinflammatory genes. The encoded protein consists of an N-terminal death domain and a C-terminal Toll-interleukin1 receptor domain. Patients with defects in this gene have an increased susceptibility to pyogenic bacterial infections. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Feb 2010]

MYD88 Gene-Disease associations (from GenCC):

• pyogenic bacterial infections due to MyD88 deficiency

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.837

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYD88	NM_002468.5	c.751C>G	p.Arg251Gly	missense_variant	Exon 5 of 5	ENST00000650905.2	NP_002459.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYD88	ENST00000650905.2	c.751C>G	p.Arg251Gly	missense_variant	Exon 5 of 5		NM_002468.5	ENSP00000498360.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.91
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Uncertain	0.080
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.15	T;T;.;.;.
Eigen	Benign	0.055
Eigen_PC	Benign	0.21
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Pathogenic	0.99	D;D;D;D;D
M_CAP	Uncertain	0.091	D
MetaRNN	Pathogenic	0.84	D;D;D;D;D
MetaSVM	Benign	-0.76	T
PhyloP100		4.8
PrimateAI	Uncertain	0.61	T
REVEL	Uncertain	0.55
Polyphen		1.0	.;D;D;.;.
MutPred		0.77		.;Loss of MoRF binding (P = 0.0317);.;.;.;
MVP		0.66
MPC		1.6
ClinPred		1.0	D
GERP RS		4.8
Varity_R		0.89
Mutation Taster		=9/91	disease causing

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: rs748659894; hg19: chr3-38182637;