Genetic Variant MYCL:p.Ile170Thr (chr1-39897958-A-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001033081.3(MYCL):c.509T>C(p.Ile170Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,460,348 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

MYCL
NM_001033081.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.32

Variant links:

Genes affected

MYCL (HGNC:7555): (MYCL proto-oncogene, bHLH transcription factor) Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within regulation of inner ear auditory receptor cell differentiation. Located in chromosome and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

MYCL links:

MYCL-AS1 (HGNC:40386): (MYCL antisense RNA 1)

MYCL-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYCL	NM_001033081.3 link	c.509T>C	p.Ile170Thr	missense_variant	Exon 2 of 2	ENST00000372816.3	NP_001028253.1	P12524-1
MYCL	NM_001033082.3 link	c.599T>C	p.Ile200Thr	missense_variant	Exon 3 of 3		NP_001028254.2	P12524-3
MYCL-AS1	NR_183424.1 link	n.488A>G		non_coding_transcript_exon_variant	Exon 2 of 3
MYCL-AS1	NR_183425.1 link	n.251A>G		non_coding_transcript_exon_variant	Exon 2 of 3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYCL	ENST00000372816.3 link	c.509T>C	p.Ile170Thr	missense_variant	Exon 2 of 2	2	NM_001033081.3	ENSP00000361903.2	P12524-1
MYCL	ENST00000397332.3 link	c.599T>C	p.Ile200Thr	missense_variant	Exon 3 of 3	1		ENSP00000380494.2	P12524-3
MYCL-AS1	ENST00000418255.1 link	n.214A>G		non_coding_transcript_exon_variant	Exon 1 of 2	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000401

AC:

AN:

249372

Hom.:

AF XY:

0.00

AC XY:

AN XY:

134934

show subpopulations

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:

0.00000891

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000205

AC:

AN:

1460348

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

726304

show subpopulations

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.599T>C (p.I200T) alteration is located in exon 3 (coding exon 3) of the MYCL gene. This alteration results from a T to C substitution at nucleotide position 599, causing the isoleucine (I) at amino acid position 200 to be replaced by a threonine (T). 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

0.95

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Uncertain

0.010

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.42

.;T

Eigen

Uncertain

0.33

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.76

T;T

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.63

D;D

MetaSVM

Benign

-0.92

MutationAssessor

Uncertain

2.3

.;M

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-4.0

D;D

REVEL

Uncertain

0.40

Sift

Benign

0.038

D;T

Sift4G

Pathogenic

0.0010

D;D

Polyphen

0.25

.;B

Vest4

0.70

MutPred

0.63

.;Loss of stability (P = 0.0062);

MVP

0.20

MPC

0.97

ClinPred

0.61

GERP RS

6.1

Varity_R

0.33

gMVP

0.61

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over