4-139890511-A-G

Position:

• chr4-139890511-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_018717.5(MAML3):​c.925T>C​(p.Trp309Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: MAML3 NM_018717.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.71

Genes affected

MAML3 (HGNC:16272): (mastermind like transcriptional coactivator 3) Enables transcription coactivator activity. Involved in Notch signaling pathway and positive regulation of transcription by RNA polymerase II. Located in nuclear speck. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.861

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAML3	NM_018717.5	c.925T>C	p.Trp309Arg	missense_variant	2/5	ENST00000509479.6	NP_061187.3
MAML3	XM_047415929.1	c.925T>C	p.Trp309Arg	missense_variant	2/5		XP_047271885.1
MAML3	XM_047415930.1	c.925T>C	p.Trp309Arg	missense_variant	2/3		XP_047271886.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAML3	ENST00000509479.6	c.925T>C	p.Trp309Arg	missense_variant	2/5	1	NM_018717.5	ENSP00000421180	P1
MAML3	ENST00000502696.1	c.111-159844T>C		intron_variant		2		ENSP00000422783

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 23, 2024

The c.925T>C (p.W309R) alteration is located in exon 2 (coding exon 2) of the MAML3 gene. This alteration results from a T to C substitution at nucleotide position 925, causing the tryptophan (W) at amino acid position 309 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.53	D
Eigen	Pathogenic	0.82
Eigen_PC	Pathogenic	0.79
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.79	T
M_CAP	Benign	0.040	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Benign	-0.60	T
MutationAssessor	Uncertain	2.5	M
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.91	D
PROVEAN	Pathogenic	-7.8	D
REVEL	Pathogenic	0.76
Sift	Uncertain	0.0010	D
Sift4G	Benign	0.098	T
Polyphen		1.0	D
Vest4		0.97
MutPred		0.56		Gain of disorder (P = 0.0857);
MVP		0.46
MPC		1.2
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.91
gMVP		0.66

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-140811665;