NM_178554.6:c.1550G>C

Variant names:

• chr3-134604015-C-G
• rs372438078
• NM_178554.6:c.1550G>C

Variant summary

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

The NM_178554.6(KY):​c.1550G>C​(p.Arg517Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,632 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R517Q) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: KY NM_178554.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.43
• Publications: 0 publications found

Genes affected

KY (HGNC:26576): (kyphoscoliosis peptidase) The protein encoded by this gene belongs to the transglutaminase-like superfamily. The protein is involved in the function, maturation and stabilization of the neuromuscular junction and may be required for normal muscle growth. Mutations in this gene are associated with myopathy, myofibrillar, 7. [provided by RefSeq, Apr 2017]

ENSG00000288700 (HGNC:):

CEP63 (HGNC:25815): (centrosomal protein 63) This gene encodes a protein with six coiled-coil domains. The protein is localized to the centrosome, a non-membraneous organelle that functions as the major microtubule-organizing center in animal cells. Several alternatively spliced transcript variants have been found, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

CEP63 Gene-Disease associations (from GenCC):

• Seckel syndrome 6

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
• autosomal recessive primary microcephaly

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_178554.6. 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
	KY	NM_178554.6	MANE Select	c.1550G>C	p.Arg517Pro	missense	Exon 11 of 11	NP_848649.3
	KY	NM_001350859.2		c.1502G>C	p.Arg501Pro	missense	Exon 10 of 10	NP_001337788.1
	KY	NM_001366276.1		c.1487G>C	p.Arg496Pro	missense	Exon 10 of 10	NP_001353205.1	Q8NBH2-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KY	ENST00000423778.7	TSL:5 MANE Select	c.1550G>C	p.Arg517Pro	missense	Exon 11 of 11	ENSP00000397598.2	Q8NBH2-4
	KY	ENST00000503669.1	TSL:1	c.*432G>C		3_prime_UTR	Exon 10 of 10	ENSP00000426777.1	B4DGA7
	KY	ENST00000864999.1		c.1496G>C	p.Arg499Pro	missense	Exon 11 of 11	ENSP00000535058.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461632 Hom.: 0 Cov.: 69 AF XY: 0.00000138 AC XY: 1 AN XY: 727098

African (AFR) AF: 0.00 AC: 0 AN: 33480

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

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111806

Other (OTH) AF: 0.00 AC: 0 AN: 60372

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.50
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Uncertain	24
DANN	Uncertain	1.0
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.51
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Benign	0.75	T
M_CAP	Benign	0.0056	T
MetaRNN	Uncertain	0.71	D
MetaSVM	Benign	-0.63	T
MutationAssessor	Benign	1.5	L
PhyloP100		2.4
PrimateAI	Benign	0.29	T
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.16
Sift	Benign	0.23	T
Sift4G	Uncertain	0.013	D
Polyphen		0.99	D
Vest4		0.60
MutPred		0.38		Gain of loop (P = 0.0079)
MVP		0.68
MPC		0.73
ClinPred		0.94	D
GERP RS		5.6
gMVP		0.84
Mutation Taster		=70/30	polymorphism

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

Other links and lift over

dbSNP: rs372438078; hg19: chr3-134322857;