chr8-60848574-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP2PP3

The NM_017780.4(CHD7):​c.5270C>A​(p.Ala1757Glu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,202 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. A1757V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CHD7
NM_017780.4 missense

Scores

7
10
2

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.91
Variant links:
Genes affected
CHD7 (HGNC:20626): (chromodomain helicase DNA binding protein 7) This gene encodes a protein that contains several helicase family domains. Mutations in this gene have been found in some patients with the CHARGE syndrome. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CHD7. . Gene score misZ 3.2193 (greater than the threshold 3.09). Trascript score misZ 3.9401 (greater than threshold 3.09). GenCC has associacion of gene with Kallmann syndrome, hypogonadotropic hypogonadism 5 with or without anosmia, CHARGE syndrome, hypogonadotropic hypogonadism, Omenn syndrome.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.823

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
CHD7NM_017780.4 linkuse as main transcriptc.5270C>A p.Ala1757Glu missense_variant 24/38 ENST00000423902.7

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
CHD7ENST00000423902.7 linkuse as main transcriptc.5270C>A p.Ala1757Glu missense_variant 24/385 NM_017780.4 P1Q9P2D1-1
CHD7ENST00000524602.5 linkuse as main transcriptc.1717-13655C>A intron_variant 1 Q9P2D1-4
CHD7ENST00000695853.1 linkuse as main transcriptc.5270C>A p.Ala1757Glu missense_variant, NMD_transcript_variant 24/37

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD3 exomes
AF:
0.00000403
AC:
1
AN:
248430
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
134798
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000557
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
6.84e-7
AC:
1
AN:
1461202
Hom.:
0
Cov.:
30
AF XY:
0.00
AC XY:
0
AN XY:
726840
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.67
BayesDel_addAF
Pathogenic
0.29
D
BayesDel_noAF
Pathogenic
0.35
CADD
Uncertain
24
DANN
Uncertain
0.98
DEOGEN2
Uncertain
0.53
D
Eigen
Uncertain
0.39
Eigen_PC
Uncertain
0.49
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Uncertain
0.88
D
M_CAP
Uncertain
0.19
D
MetaRNN
Pathogenic
0.82
D
MetaSVM
Uncertain
0.094
D
MutationAssessor
Uncertain
2.4
M
MutationTaster
Benign
1.0
D;D;D
PrimateAI
Pathogenic
0.86
D
PROVEAN
Uncertain
-3.5
D
REVEL
Pathogenic
0.77
Sift
Benign
0.058
T
Sift4G
Uncertain
0.011
D
Polyphen
0.46
P
Vest4
0.92
MutPred
0.49
Gain of disorder (P = 0.0138);
MVP
0.96
MPC
1.8
ClinPred
0.94
D
GERP RS
5.1
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.75
gMVP
0.90

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.

Other links and lift over

dbSNP: rs368747227; hg19: chr8-61761133; API