Is PHIP p.Arg178Ter (c.532C>T) pathogenic?

PHIP p.Arg178Ter (c.532C>T) is classified Pathogenic/Likely pathogenic in PHIP (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-12-03). Absent from gnomAD v4.1; Associated with PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome.

How common is PHIP p.Arg178Ter (c.532C>T) in the general population?

PHIP p.Arg178Ter (c.532C>T) is absent from gnomAD v4.1 (gnomAD).

PHIP p.Arg178Ter

Q: What condition is associated with PHIP p.Arg178Ter (c.532C>T)?

PHIP p.Arg178Ter (c.532C>T) is associated with PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome (ClinVar).

Q: How is PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

c.532C>T · rs1554210094 · VCV489096

Pathogenic/Likely pathogenic Multiple submitters

Classification

Pathogenic/Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	nonsense (stop-gain)	predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMD	predicted	premature termination codon in exon 7 of 40
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 3.7	GERP -4.2, phastCons 1
Overall
CADD	37.0	PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: PHIP
Protein: p.Arg178Ter
Coding: c.532C>T
MANE Select: NM_017934
dbSNP: rs1554210094
Type: single nucleotide variant
Location: chr6:79042911 (GRCh38)
Gene constraint: LOEUF 0.246 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 66.57 · 146 PDB

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

Disease context

For PHIP-related behavioral problems-intellectual disability-obesity-dysmorphic features syndrome (Orphanet):

Inheritance: Autosomal dominant
Onset: Antenatal, Infancy, Neonatal

Similar variants

PHIP p.Arg110Cys Pathogenic/Likely pathogenic ★★ same condition
PHIP p.Arg255Ter Pathogenic/Likely pathogenic ★★ same condition
PHIP p.Arg396Ter Pathogenic/Likely pathogenic ★★ same condition
PHIP p.Arg503Ter Pathogenic/Likely pathogenic ★★ same condition
PHIP p.Arg721Ter Pathogenic/Likely pathogenic ★★ same condition
PHIP p.Asn507Ser Likely pathogenic ★★ ⚠ same condition
PHIP p.Gln274Ter Pathogenic ★★ same condition
PHIP p.Gly223Val 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/phip-p-arg178ter (accessed [today's date]).

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