Is DSCAML1 p.Ser660= (c.1980C>T) pathogenic?

DSCAML1 p.Ser660= (c.1980C>T) is classified Benign in DSCAML1 (ClinVar, Single submitter, 2 submitters; last evaluated 2026-01-28). Rare (popmax 0.608%, afr).

How common is DSCAML1 p.Ser660= (c.1980C>T) in the general population?

DSCAML1 p.Ser660= (c.1980C>T) is rare (popmax 0.608%, afr) (gnomAD).

DSCAML1 p.Ser660=

c.1980C>T · rs140236864 · VCV783649

Benign Single submitter

Classification

Benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

rare (popmax 0.608%, afr)

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.2	GERP 0.52, phastCons 1
Overall
CADD	9.863	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.608% African / African-American · 456/75,020 alleles

Filtering AF 0.562% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.544%

Overall 0.031% 500/1,613,576 alleles · rare exomes 239/1,461,338 · genomes 261/152,238 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.608%	165
Remaining individualsnot grpmax-eligible	0.0336%	2,976
Admixed American	0.03%	3,335
Finnishnot grpmax-eligible	0.00157%	63,496
South Asian	0.0011%	91,066
European (non-Finnish)	0.000254%	393,340

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: DSCAML1
Protein: p.Ser660=
Coding: c.1980C>T
MANE Select: NM_020693
dbSNP: rs140236864
Type: single nucleotide variant
Location: chr11:117505536 (GRCh38)
Gene constraint: LOEUF 0.253 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 69.92 · 1 PDB
Residue 660: the ig-like c2-type 7 domain

Full DSCAML1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

DSCAML1 c.-101C>T Uncertain significance ★★ same type
DSCAML1 c.-17T>C Uncertain significance ★★ same type
DSCAML1 c.-23G>A Uncertain significance ★★ same type
DSCAML1 c.-44C>T Uncertain significance ★★ same type
DSCAML1 c.-51G>T Uncertain significance ★★ same type
DSCAML1 c.-57G>A Uncertain significance ★★ same type
DSCAML1 c.-87G>A Uncertain significance ★★ same type
DSCAML1 p.Ala1060Ser Uncertain significance ★★ ⚠ same type

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/dscaml1-p-ser660 (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown