rs1554078349

Variant names:

• chr5-98893554-C-T
• rs1554078349
• NM_001270.4:c.1853G>A

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PP3_Moderate PP5

The NM_001270.4(CHD1):​c.1853G>A​(p.Arg618Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: CHD1 NM_001270.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1 O:1
• Conservation: PhyloP100: 7.88
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Pilarowski-Bjornsson syndrome

  Inheritance: AD, Unknown Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Orphanet
• complex neurodevelopmental disorder

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.931
• PP5: Variant 5-98893554-C-T is Pathogenic according to our data. Variant chr5-98893554-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 438819.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CHD1	NM_001270.4	c.1853G>A	p.Arg618Gln	missense_variant	Exon 14 of 36	ENST00000614616.5	NP_001261.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CHD1	ENST00000614616.5	c.1853G>A	p.Arg618Gln	missense_variant	Exon 14 of 36	5	NM_001270.4	ENSP00000483667.1
CHD1	ENST00000511067.3	c.1853G>A	p.Arg618Gln	missense_variant	Exon 14 of 37	5		ENSP00000479403.2
CHD1	ENST00000706140.1	n.2000G>A		non_coding_transcript_exon_variant	Exon 13 of 34
CHD1	ENST00000706141.1	n.1853G>A		non_coding_transcript_exon_variant	Exon 14 of 37			ENSP00000516225.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Pilarowski-Bjornsson syndrome Pathogenic:1

Jun 24, 2019

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

not provided Other:1

-

GenomeConnect, ClinGen

Significance: not provided

Review Status: no classification provided

Collection Method: phenotyping only

GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Pathogenic	0.50
CADD	Pathogenic	34
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.77	D;D
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.83
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	.;D
M_CAP	Pathogenic	0.34	D
MetaRNN	Pathogenic	0.93	D;D
MetaSVM	Pathogenic	0.99	D
MutationAssessor	Pathogenic	3.0	M;M
PhyloP100		7.9
PrimateAI	Pathogenic	0.89	D
PROVEAN	Uncertain	-3.7	.;D
REVEL	Pathogenic	0.84
Sift	Pathogenic	0.0	.;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.89
MutPred		0.76		Gain of sheet (P = 0.1208);Gain of sheet (P = 0.1208);
MVP		0.94
MPC		2.2
ClinPred		1.0	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.60
gMVP		0.92
Mutation Taster		=14/86	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1554078349; hg19: chr5-98229258; COSMIC: COSV99399882; COSMIC: COSV99399882;