Genetic Variant CHD1:p.Pro1684Leu (chr5-98856462-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_001270.4(CHD1):c.5051C>T(p.Pro1684Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000246 in 812,850 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 22)

Exomes 𝑓: 0.0000025 ( 0 hom. )

Consequence

CHD1
NM_001270.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.81

Variant links:

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]

CHD1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.34084845).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD1	NM_001270.4 link	c.5051C>T	p.Pro1684Leu	missense_variant	Exon 36 of 36	ENST00000614616.5	NP_001261.2	O14646-1B3KT33

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD1	ENST00000614616.5 link	c.5051C>T	p.Pro1684Leu	missense_variant	Exon 36 of 36	5	NM_001270.4	ENSP00000483667.1		O14646-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251166

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135732

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:

0.0000327

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000246

AC:

AN:

812850

Hom.:

Cov.:

AF XY:

0.00000491

AC XY:

AN XY:

407418

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:

0.0000170

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000170

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000101

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 07, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.5051C>T (p.P1684L) alteration is located in exon 35 (coding exon 35) of the CHD1 gene. This alteration results from a C to T substitution at nucleotide position 5051, causing the proline (P) at amino acid position 1684 to be replaced by a leucine (L). 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

0.24

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Uncertain

0.070

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.47

T;T

Eigen

Uncertain

0.38

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.92

.;D

M_CAP

Benign

0.028

MetaRNN

Benign

0.34

T;T

MetaSVM

Uncertain

0.33

MutationAssessor

Uncertain

2.5

M;M

PrimateAI

Uncertain

0.66

PROVEAN

Uncertain

-3.4

.;D

REVEL

Uncertain

0.47

Sift

Uncertain

0.0020

.;D

Sift4G

Benign

0.22

T;T

Polyphen

0.29

B;B

Vest4

0.32

MutPred

0.20

Gain of MoRF binding (P = 0.0936);Gain of MoRF binding (P = 0.0936);

MVP

0.84

MPC

0.039

ClinPred

0.70

GERP RS

5.8

Varity_R

0.21

gMVP

0.58

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