5-98856537-C-G

Variant names:

• chr5-98856537-C-G
• rs2112435759
• NM_001270.4:c.4976G>C
• CHD1 p.Arg1659Thr

Variant summary

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

The NM_001270.4(CHD1):​c.4976G>C​(p.Arg1659Thr) variant causes a missense change. The variant allele was found at a frequency of 0.0000157 in 1,461,656 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: 0.000016 (0 hom.)
• Consequence: CHD1 NM_001270.4 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 7.16
• 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: Orphanet, Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• complex neurodevelopmental disorder

  Inheritance: AR, AD Classification: LIMITED Submitted by: Ambry Genetics, ClinGen

ENSG00000295348 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001270.4. 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
	CHD1	NM_001270.4	MANE Select	c.4976G>C	p.Arg1659Thr	missense	Exon 36 of 36	NP_001261.2	O14646-1
	CHD1	NM_001364113.3		c.5240G>C	p.Arg1747Thr	missense	Exon 37 of 37	NP_001351042.1	A0A087WVF4
	CHD1	NM_001376194.2		c.4976G>C	p.Arg1659Thr	missense	Exon 36 of 36	NP_001363123.1	O14646-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CHD1	ENST00000614616.5	TSL:5 MANE Select	c.4976G>C	p.Arg1659Thr	missense	Exon 36 of 36	ENSP00000483667.1	O14646-1
	CHD1	ENST00000511067.3	TSL:5	c.5240G>C	p.Arg1747Thr	missense	Exon 37 of 37	ENSP00000479403.2	A0A087WVF4
	CHD1	ENST00000926040.1		c.4976G>C	p.Arg1659Thr	missense	Exon 36 of 36	ENSP00000596099.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.0000157 AC: 23 AN: 1461656 Hom.: 0 Cov.: 33 AF XY: 0.0000110 AC XY: 8 AN XY: 727108

African (AFR) AF: 0.00 AC: 0 AN: 33470

American (AMR) AF: 0.00 AC: 0 AN: 44708

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

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

European-Non Finnish (NFE) AF: 0.0000189 AC: 21 AN: 1111836

Other (OTH) AF: 0.0000331 AC: 2 AN: 60382

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	2	-	Pilarowski-Bjornsson syndrome (2)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.80
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.17
CADD	Uncertain	24
DANN	Benign	0.96
DEOGEN2	Benign	0.17	T
Eigen	Pathogenic	0.77
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D
M_CAP	Uncertain	0.10	D
MetaRNN	Uncertain	0.72	D
MetaSVM	Uncertain	0.75	D
MutationAssessor	Uncertain	2.4	M
PhyloP100		7.2
PrimateAI	Pathogenic	0.80	D
PROVEAN	Benign	-1.9	N
REVEL	Pathogenic	0.68
Sift	Uncertain	0.0040	D
Sift4G	Benign	0.15	T
Varity_R		0.22
gMVP		0.51
Mutation Taster		=57/43	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs2112435759; hg19: chr5-98192241;