rs587778543

Positions:

• chr3-38138821-A-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_002468.5(MYD88):​c.121A>T​(p.Thr41Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,461,382 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.000016 (0 hom.)
• Consequence: MYD88 NM_002468.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1 O:1
• Conservation: PhyloP100: 0.753

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 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.06498936).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MYD88	NM_002468.5	c.121A>T	p.Thr41Ser	missense_variant	1/5	ENST00000650905.2	NP_002459.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MYD88	ENST00000650905.2	c.121A>T	p.Thr41Ser	missense_variant	1/5		NM_002468.5	ENSP00000498360.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250830 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135864

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 SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000157 AC: 23 AN: 1461382 Hom.: 0 Cov.: 31 AF XY: 0.0000151 AC XY: 11 AN XY: 726998

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000207

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000756

TwinsUK AF: 0.000270 AC: 1

ALSPAC AF: 0.00 AC: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Pyogenic bacterial infections due to MyD88 deficiency Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 04, 2022

This variant has not been reported in the literature in individuals affected with MYD88-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The serine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. ClinVar contains an entry for this variant (Variation ID: 134868). This variant is present in population databases (rs587778543, gnomAD 0.0009%). This sequence change replaces threonine, which is neutral and polar, with serine, which is neutral and polar, at codon 54 of the MYD88 protein (p.Thr54Ser). -

not specified Other:1

not provided, no classification provided

reference population

ITMI

Sep 19, 2013

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.076
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Benign	10
DANN	Benign	0.85
DEOGEN2	Benign	0.0086	T;.;T;.;.;.;.;.
Eigen	Benign	-0.83
Eigen_PC	Benign	-0.90
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.70	T;T;T;T;T;T;T;T
M_CAP	Benign	0.018	T
MetaRNN	Benign	0.065	T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.3	.;.;L;L;L;.;.;.
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	0.17	N;.;.;.;.;N;.;.
REVEL	Benign	0.027
Sift	Benign	0.72	T;.;.;.;.;T;.;.
Sift4G	Benign	1.0	T;.;.;.;.;T;.;.
Polyphen		0.0030, 0.0010	.;.;B;B;.;.;.;.
Vest4		0.093
MutPred		0.36		.;.;Gain of glycosylation at T41 (P = 0.0326);Gain of glycosylation at T41 (P = 0.0326);Gain of glycosylation at T41 (P = 0.0326);.;.;.;
MVP		0.50
MPC		0.44
ClinPred		0.044	T
GERP RS		0.97
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.22

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs587778543; hg19: chr3-38180312;