rs201878285

Variant names:

• chr16-89554524-C-A
• NM_003119.4:c.2142C>A

Your query was ambiguous. Multiple possible variants found:

• chr16-89554524-C-A
• chr16-89554524-C-G
• chr16-89554524-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_003119.4(SPG7):​c.2142C>A​(p.Thr714Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,457,306 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.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SPG7 NM_003119.4 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.87

Genes affected

SPG7 (HGNC:11237): (SPG7 matrix AAA peptidase subunit, paraplegin) This gene encodes a mitochondrial metalloprotease protein that is a member of the AAA family. Members of this protein family share an ATPase domain and have roles in diverse cellular processes including membrane trafficking, intracellular motility, organelle biogenesis, protein folding, and proteolysis. Mutations in this gene cause autosomal recessive spastic paraplegia 7. Two transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Mar 2014]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.79).
• BP7: Synonymous conserved (PhyloP=-2.87 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SPG7	NM_003119.4	c.2142C>A	p.Thr714Thr	synonymous_variant	Exon 16 of 17	ENST00000645818.2	NP_003110.1
SPG7	NM_001363850.1	c.2142C>A	p.Thr714Thr	synonymous_variant	Exon 16 of 18		NP_001350779.1
SPG7	XM_047434537.1	c.1269C>A	p.Thr423Thr	synonymous_variant	Exon 11 of 13		XP_047290493.1
SPG7	XM_047434540.1	c.828C>A	p.Thr276Thr	synonymous_variant	Exon 8 of 9		XP_047290496.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SPG7	ENST00000645818.2	c.2142C>A	p.Thr714Thr	synonymous_variant	Exon 16 of 17		NM_003119.4	ENSP00000495795.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1457306 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 724982

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.0000204

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.014
DANN	Benign	0.71
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr16-89620932;