5-98856556-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2 PP2 BP4_Moderate

The NM_001270.4(CHD1):c.4957A>G(p.Lys1653Glu) 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. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K1653R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CHD1 NM_001270.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.69

Genes affected

CHD1 (HGNC:1915): (chromodomain helicase DNA binding protein 1) The CHD family of proteins is characterized by the presence of chromo (chromatin organization modifier) domains and SNF2-related helicase/ATPase domains. CHD genes alter gene expression possibly by modification of chromatin structure thus altering access of the transcriptional apparatus to its chromosomal DNA template. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, CHD1
• BP4: Computational evidence support a benign effect (MetaRNN=0.24780247).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHD1	NM_001270.4	c.4957A>G	p.Lys1653Glu	missense_variant	36/36	ENST00000614616.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHD1	ENST00000614616.5	c.4957A>G	p.Lys1653Glu	missense_variant	36/36	5	NM_001270.4	P2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

See cases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Laboratorio de Genetica e Diagnostico Molecular, Hospital Israelita Albert Einstein

Oct 30, 2020

ACMG classification criteria: PM2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.51
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
Cadd	Uncertain	24
Dann	Uncertain	0.98
DEOGEN2	Benign	0.077	T;T
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Pathogenic	0.98	D
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Uncertain	0.20	D
MutationAssessor	Benign	0.0	N;N
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.64	T
Sift4G	Benign	0.56	T;T
Polyphen		0.96	P;P
Vest4		0.42
MutPred		0.32		Loss of methylation at K1653 (P = 4e-04);Loss of methylation at K1653 (P = 4e-04);
MVP		0.85
MPC		0.046
ClinPred		0.61	D
GERP RS		5.5
Varity_R		0.18
gMVP		0.29

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr5-98192260;