13-77051896-C-A

Variant names:

• chr13-77051896-C-A
• rs2036891061
• NM_015057.5:c.13670G>T

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM5 PP3

The NM_015057.5(MYCBP2):​c.13670G>T​(p.Arg4557Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,852 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 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. R4557C) has been classified as Pathogenic.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MYCBP2 NM_015057.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.36
• Publications: 0 publications found

Genes affected

MYCBP2 (HGNC:23386): (MYC binding protein 2) This gene encodes an E3 ubiquitin-protein ligase and member of the PHR (Phr1/MYCBP2, highwire and RPM-1) family of proteins. The encoded protein plays a role in axon guidance and synapse formation in the developing nervous system. In mammalian cells, this protein regulates the cAMP and mTOR signaling pathways, and may additionally regulate autophagy. Reduced expression of this gene has been observed in acute lymphoblastic leukemia patients and a mutation in this gene has been identified in patients with a rare inherited vision defect. [provided by RefSeq, Mar 2017]

ENSG00000283208 (HGNC:):

MYCBP2-AS1 (HGNC:41023): (MYCBP2 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr13-77051897-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 3340699.Status of the report is criteria_provided_single_submitter, 1 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.774

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015057.5. 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
	MYCBP2	NM_015057.5	MANE Select	c.13670G>T	p.Arg4557Leu	missense	Exon 81 of 83	NP_055872.4	O75592-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MYCBP2	ENST00000544440.7	TSL:1 MANE Select	c.13670G>T	p.Arg4557Leu	missense	Exon 81 of 83	ENSP00000444596.2	O75592-1
	MYCBP2	ENST00000357337.11	TSL:1	c.13850G>T	p.Arg4617Leu	missense	Exon 82 of 84	ENSP00000349892.6	A0A499FJI4
	ENSG00000283208	ENST00000638147.2	TSL:5	c.566-23622C>A		intron	N/A	ENSP00000490953.2	A0A1B0GWJ7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461852 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727230

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111986

Other (OTH) AF: 0.0000166 AC: 1 AN: 60390

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.82
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.14
CADD	Uncertain	26
DANN	Uncertain	1.0
Eigen	Pathogenic	0.89
Eigen_PC	Pathogenic	0.86
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.032	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Benign	-0.52	T
PhyloP100		7.4
PrimateAI	Pathogenic	0.87	D
PROVEAN	Pathogenic	-5.7	D
REVEL	Uncertain	0.49
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0020	D
Vest4		0.93
MutPred		0.48		Gain of catalytic residue at G4515 (P = 0.0028)
MVP		0.56
MPC		2.1
ClinPred		1.0	D
GERP RS		5.7
Mutation Taster		=11/89	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: rs2036891061; hg19: chr13-77626031;