MFHAS1

Chr 8

multifunctional ROCO family signaling regulator 1

Also known as: LRRC65, MASL1, ROCO4

Identified in a human 8p amplicon, this gene is a potential oncogene whose expression is enhanced in some malignant fibrous histiocytomas (MFH). The primary structure of its product includes an ATP/GTP-binding site, three leucine zipper domains, and a leucine-rich tandem repeat, which are structural or functional elements for interactions among proteins related to the cell cycle, and which suggest that overexpression might be oncogenic with respect to MFH. [provided by RefSeq, Jul 2008]

Primary Disease Associations & Inheritance

Malignant fibrous histiocytomaMIM #605352
0
Active trials
84
Pathogenic / LP
270
ClinVar variants
3
Pubs (1 yr)
-1.9
Missense Z
0.82
LOEUF
Clinical SummaryMFHAS1
Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
84 Pathogenic / Likely Pathogenic· 163 VUS of 270 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint
0.82LOEUF
pLI 0.000
Z-score 2.36
OE 0.56 (0.390.82)
Tolerant

Typical tolerance to LoF variation

Missense Constraint
-1.94Z-score
OE missense 1.22 (1.151.29)
757 obs / 620.8 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios
LoF OE0.56 (0.390.82)
00.351.4
Missense OE1.22 (1.151.29)
00.61.4
Synonymous OE1.43
01.21.6
LoF obs/exp: 19 / 33.8Missense obs/exp: 757 / 620.8Syn Z: -5.73
GOFDN
DN
0.6356th %ile
GOF
0.7126th %ile
LOF
0.2678th %ile

This gene has evidence for multiple mechanisms of pathogenicity (gain-of-function and dominant-negative). Both the Badonyi & Marsh prediction and the broader genomic evidence point to gain-of-function as the predominant mechanism. Different variants in this gene may act through different mechanisms — interpret in context of the specific variant.

GOFprediction above median
DNprediction above median

Note: In-silico variant effect predictors (SIFT, PolyPhen, REVEL, CADD) may underestimate pathogenicity of missense variants in genes with GOF or DN mechanisms. Consider functional evidence and clinical context.

Predictions from Badonyi M, Marsh JA. PLoS ONE. 2024;19(8):e0307312.

ClinVar Variant Classifications

270 submitted variants in ClinVar

Classification Summary

Pathogenic81
Likely Pathogenic3
VUS163
Likely Benign18
Benign5
81
Pathogenic
3
Likely Pathogenic
163
VUS
18
Likely Benign
5
Benign

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
0
0
81
0
81
Likely Pathogenic
0
0
3
0
3
VUS
0
151
12
0
163
Likely Benign
0
4
4
10
18
Benign
0
0
0
5
5
Total015510015270

LoF = frameshift, stop gained/lost, canonical splice · Counts from ClinVar esearch · Updated hourly

View in ClinVar →

MFHAS1 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →
Clinical Literature
Landmark / reviewRecent case evidence