3-38138762-C-T

Variant names:

• chr3-38138762-C-T
• rs563686976
• NM_002468.5:c.62C>T

Variant summary

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

The NM_002468.5(MYD88):​c.62C>T​(p.Pro21Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000656 in 152,362 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P21R) has been classified as Uncertain significance.

• Frequency: Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
• Consequence: MYD88 NM_002468.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.76
• Publications: 2 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: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics

ENSG00000299092 (HGNC:):

ACMG classification

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

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002468.5. 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
	MYD88	NM_002468.5	MANE Select	c.62C>T	p.Pro21Leu	missense	Exon 1 of 5	NP_002459.3	Q99836-1
	MYD88	NM_001172567.2		c.62C>T	p.Pro21Leu	missense	Exon 1 of 5	NP_001166038.2	Q99836-6
	MYD88	NM_001172568.2		c.62C>T	p.Pro21Leu	missense	Exon 1 of 4	NP_001166039.2	Q99836-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYD88	ENST00000650905.2	MANE Select	c.62C>T	p.Pro21Leu	missense	Exon 1 of 5	ENSP00000498360.2	Q99836-1
	MYD88	ENST00000421516.3	TSL:1	c.62C>T	p.Pro21Leu	missense	Exon 1 of 5	ENSP00000391753.3	Q99836-6
	MYD88	ENST00000417037.8	TSL:1	c.62C>T	p.Pro21Leu	missense	Exon 1 of 4	ENSP00000401399.4	Q99836-2

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152244 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000402 AC: 1 AN: 249044 AF XY: 0.00

Gnomad AFR exome AF: 0.0000630

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome AF: 0.00000656 AC: 1 AN: 152362 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74506

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000240 AC: 1 AN: 41592

American (AMR) AF: 0.00 AC: 0 AN: 15304

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.00 AC: 0 AN: 4832

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68028

Other (OTH) AF: 0.00 AC: 0 AN: 2116

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.56
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	T
Eigen	Uncertain	0.34
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D
M_CAP	Uncertain	0.19	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Benign	-0.49	T
MutationAssessor	Pathogenic	2.9	M
PhyloP100		3.8
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-7.2	D
REVEL	Benign	0.27
Sift	Uncertain	0.0030	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.96	D
Vest4		0.68
MutPred		0.44		Gain of helix (P = 0.0022)
MVP		0.53
MPC		1.3
ClinPred		0.98	D
GERP RS		2.1
PromoterAI		0.021	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.62
Mutation Taster		=19/81	disease causing

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: rs563686976; hg19: chr3-38180253;