Is CD101 p.Ser887Leu (c.2660C>T) pathogenic?

CD101 p.Ser887Leu (c.2660C>T) is classified Uncertain significance in CD101 (ClinVar, Single submitter, 1 submitter; last evaluated 2023-12-21). AlphaMissense: likely benign (0.0895); Very rare (popmax 0.00267%, afr).

How common is CD101 p.Ser887Leu (c.2660C>T) in the general population?

CD101 p.Ser887Leu (c.2660C>T) is very rare (popmax 0.00267%, afr) (gnomAD).

What do computational predictors say about CD101 p.Ser887Leu (c.2660C>T)?

AlphaMissense predicts likely benign (score 0.0895) — an in-silico prediction, not a clinical call.

CD101 p.Ser887Leu

c.2660C>T · rs1243826285 · VCV3140266

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0895 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.0895	likely benign
REVEL	0.219	benign-leaning
SaProt	LLR -7.01	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	Δ0.23	acceptor gain · deltas
Pangolin	Δ0.20	gain · loss 0.00 · agrees with SpliceAI · independent
Constraint at this position
Conservation	phyloP 1.3	GERP -0.39, phastCons 0.001
Regional constraint	o/e 0.94	unconstrained · MANE · 32 kb · p 0.034 · regional, not allelic
Overall
CADD	22.5	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00267% African / African-American · 2/74,916 alleles

Filtering AF 0.000443% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000166%

Overall 0.00031% 5/1,614,068 alleles · very rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.00267%	37,458
European (non-Finnish)	0.000254%	393,351

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: CD101
Protein: p.Ser887Leu
Coding: c.2660C>T
MANE Select: NM_001256106
dbSNP: rs1243826285
Type: single nucleotide variant
Location: chr1:117025740 (GRCh38)
Gene constraint: LOEUF 0.889 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.76
Residue 887: the ig-like c2-type 7 domain; a disulfide bond

Full CD101 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CD101 p.Ser887Pro Uncertain significance ★ ⚠ same residue
CD101 p.Arg622His Benign ★★ same type
CD101 p.Arg933Gln Benign ★★ ⚠ same type
CD101 p.Asn225Ser Benign ★★ same type
CD101 p.Leu362Pro Benign ★★ same type
CD101 p.Ser525Arg Benign ★★ ⚠ same type
CD101 p.Ser985= Benign ★★ same type
CD101 p.Tyr651Asp Benign ★★ 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/cd101-p-ser887leu (accessed [today's date]).

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