chr7-2571547-C-A

Variant names:

• chr7-2571547-C-A
• rs200260075
• NM_152558.5:c.152C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_152558.5(IQCE):​c.152C>A​(p.Pro51Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000688 in 1,454,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. P51L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: IQCE NM_152558.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.18
• Publications: 0 publications found

Genes affected

IQCE (HGNC:29171): (IQ motif containing E) Involved in limb morphogenesis. Predicted to be extrinsic component of membrane. Predicted to be part of plasma membrane protein complex. [provided by Alliance of Genome Resources, Apr 2022]

IQCE Gene-Disease associations (from GenCC):

• postaxial polydactyly type A

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• polydactyly, postaxial, type a7

  Inheritance: AR Classification: LIMITED Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IQCE	NM_152558.5	c.152C>A	p.Pro51Gln	missense_variant	Exon 4 of 22	ENST00000402050.7	NP_689771.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IQCE	ENST00000402050.7	c.152C>A	p.Pro51Gln	missense_variant	Exon 4 of 22	1	NM_152558.5	ENSP00000385597.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.88e-7 AC: 1 AN: 1454056 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 723696

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44720

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39694

South Asian (SAS) AF: 0.00 AC: 0 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 45724

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

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111944

Other (OTH) AF: 0.00 AC: 0 AN: 60342

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.28
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Benign	-0.45
CADD	Uncertain	25
DANN	Benign	0.91
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Benign	0.65	D
M_CAP	Benign	0.014	T
PhyloP100		4.2
ClinPred		0.94	D
GERP RS		5.3
Varity_R		0.36
Mutation Taster		=46/54	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.21		Details are displayed if max score is > 0.2
DS_AG_spliceai		0.21		Position offset: 2

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

Other links and lift over

dbSNP: rs200260075; hg19: chr7-2611181;