rs139788610

chr9-134785092-A-Cchr9-134785092-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP2 PP3

The NM_000093.5(COL5A1):c.2588A>C(p.Glu863Ala) 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. 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. E863V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: COL5A1 NM_000093.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 8.32

Genes affected

COL5A1 (HGNC:2209): (collagen type V alpha 1 chain) This gene encodes an alpha chain for one of the low abundance fibrillar collagens. Fibrillar collagen molecules are trimers that can be composed of one or more types of alpha chains. Type V collagen is found in tissues containing type I collagen and appears to regulate the assembly of heterotypic fibers composed of both type I and type V collagen. This gene product is closely related to type XI collagen and it is possible that the collagen chains of types V and XI constitute a single collagen type with tissue-specific chain combinations. The encoded procollagen protein occurs commonly as the heterotrimer pro-alpha1(V)-pro-alpha1(V)-pro-alpha2(V). Mutations in this gene are associated with Ehlers-Danlos syndrome, types I and II. Alternative splicing of this gene results in multiple transcript variants. [provided by RefSeq, May 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant where missense usually causes diseases, COL5A1
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.834

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
COL5A1	NM_000093.5	c.2588A>C	p.Glu863Ala	missense_variant	30/66	ENST00000371817.8
COL5A1	NM_001278074.1	c.2588A>C	p.Glu863Ala	missense_variant	30/66
COL5A1	XM_017014266.3	c.2588A>C	p.Glu863Ala	missense_variant	30/65

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
COL5A1	ENST00000371817.8	c.2588A>C	p.Glu863Ala	missense_variant	30/66	1	NM_000093.5	P4
COL5A1	ENST00000371820.4	c.2588A>C	p.Glu863Ala	missense_variant	30/66	2		A2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Pathogenic	0.23	D
BayesDel_noAF	Uncertain	0.090
Cadd	Pathogenic	26
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.72	D;.
Eigen	Uncertain	0.50
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Pathogenic	0.50	D
MetaRNN	Pathogenic	0.83	D;D
MetaSVM	Uncertain	0.77	D
MutationAssessor	Benign	0.97	L;L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.67	T
PROVEAN	Pathogenic	-5.3	D;.
REVEL	Pathogenic	0.81
Sift	Uncertain	0.0010	D;.
Sift4G	Uncertain	0.036	D;D
Polyphen		1.0	D;.
Vest4		0.72
MutPred		0.30		Loss of solvent accessibility (P = 0.0224);Loss of solvent accessibility (P = 0.0224);
MVP		0.84
MPC		0.57
ClinPred		0.99	D
GERP RS		4.4
Varity_R		0.69
gMVP		0.77

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

Other links and lift over

dbSNP: rs139788610; hg19: chr9-137676938;