Is BICD2 p.Pro327Ser (c.979C>T) pathogenic?

BICD2 p.Pro327Ser (c.979C>T) is classified Likely benign in BICD2 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-11-16). AlphaMissense: likely benign (0.0692); Rare (popmax 0.177%, afr); Associated with Inborn genetic diseases.

What condition is associated with BICD2 p.Pro327Ser (c.979C>T)?

BICD2 p.Pro327Ser (c.979C>T) is associated with Inborn genetic diseases, autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures (ClinVar).

How common is BICD2 p.Pro327Ser (c.979C>T) in the general population?

BICD2 p.Pro327Ser (c.979C>T) is rare (popmax 0.177%, afr) (gnomAD).

What do computational predictors say about BICD2 p.Pro327Ser (c.979C>T)?

AlphaMissense predicts likely benign (score 0.0692) — an in-silico prediction, not a clinical call.

BICD2 p.Pro327Ser

c.979C>T · rs147814238 · VCV706406

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0692 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.177%, afr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0692	likely benign
REVEL	0.111	moderately benign-leaning
SaProt	LLR -5.62	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.1, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 1,691 bp · p 0.0012 · regional, not allelic
Overall
CADD	21.3	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.177% African / African-American · 133/75,040 alleles

Filtering AF 0.153% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.143%

Overall 0.00843% 136/1,614,106 alleles · rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.177%	564
Remaining individualsnot grpmax-eligible	0.0016%	62,506
South Asian	0.0011%	91,082
European (non-Finnish)	8.47e-05%	1,180,048

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: BICD2
Protein: p.Pro327Ser
Coding: c.979C>T
MANE Select: NM_001003800
dbSNP: rs147814238
Type: single nucleotide variant
Location: chr9:92720383 (GRCh38)
Gene constraint: LOEUF 0.507 · pLI 0.95 (gnomAD)
Structure: AlphaFold pLDDT 78.89 · 2 PDB
Residue 327: the 'interacts with dynll1, dync1h1, dync1i2, dctn1 and dctn2' region; the 'disordered' region

Full BICD2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: autosomal dominant childhood-onset proximal spinal muscular atrophy with contractures

Similar variants

BICD2 p.Pro327= Benign/Likely benign ★★ same residue
BICD2 p.Pro327Leu Likely benign ★★ same residue
BICD2 p.Pro327Thr Uncertain significance ★ ⚠ same residue
BICD2 p.Arg694Cys Pathogenic/Likely pathogenic ★★ same condition
BICD2 p.Arg694Gly Pathogenic/Likely pathogenic ★★ same condition
BICD2 p.Lys734Glu Likely pathogenic ★★ same condition
BICD2 p.Ser107Leu Pathogenic ★★ ⚠ same condition
BICD2 p.Thr703Met Pathogenic/Likely pathogenic ★★ same condition

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/bicd2-p-pro327ser (accessed [today's date]).

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