chr17-42568494-A-G

Position:

• chr17-42568494-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_198204.2(MLX):​c.104A>G​(p.Lys35Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MLX NM_198204.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.45

Genes affected

MLX (HGNC:11645): (MAX dimerization protein MLX) The product of this gene belongs to the family of basic helix-loop-helix leucine zipper (bHLH-Zip) transcription factors. These factors form heterodimers with Mad proteins and play a role in proliferation, determination and differentiation. This gene product may act to diversify Mad family function by its restricted association with a subset of the Mad family of transcriptional repressors, namely, Mad1 and Mad4. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21139157).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MLX	NM_198204.2	c.104A>G	p.Lys35Arg	missense_variant	3/8	ENST00000435881.7
MLX	NM_170607.3	c.266A>G	p.Lys89Arg	missense_variant	3/8
MLX	NM_198205.2	c.80-343A>G		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MLX	ENST00000435881.7	c.104A>G	p.Lys35Arg	missense_variant	3/8	1	NM_198204.2	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

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

Aug 17, 2022

The c.266A>G (p.K89R) alteration is located in exon 3 (coding exon 3) of the MLX gene. This alteration results from a A to G substitution at nucleotide position 266, causing the lysine (K) at amino acid position 89 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	Benign	0.084
BayesDel_addAF	Benign	-0.031	T
BayesDel_noAF	Benign	-0.28
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Benign	0.096	.;T
Eigen	Benign	-0.082
Eigen_PC	Benign	0.11
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.81	T;T
M_CAP	Benign	0.032	D
MetaRNN	Benign	0.21	T;T
MetaSVM	Benign	-0.56	T
MutationAssessor	Benign	0.55	.;N
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-0.080	N;N
REVEL	Benign	0.25
Sift	Benign	0.13	T;T
Sift4G	Benign	0.51	T;T
Polyphen		0.0020	B;B
Vest4		0.26
MutPred		0.21		.;Loss of ubiquitination at K89 (P = 0.0043);
MVP		0.82
MPC		0.26
ClinPred		0.58	D
GERP RS		5.4
Varity_R		0.21
gMVP		0.26

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs2093018036; hg19: chr17-40720512;