KIF20A

Chr 5AR

kinesin family member 20A

Also known as: MKLP2, RAB6KIFL, RCM6

Enables protein kinase binding activity. Involved in microtubule bundle formation; midbody abscission; and regulation of cytokinesis. Located in several cellular components, including cleavage furrow; midbody; and mitotic spindle. Implicated in familial restrictive cardiomyopathy 6. [provided by Alliance of Genome Resources, Jul 2025]

Primary Disease Associations & Inheritance

?Cardiomyopathy, familial restrictive, 6MIM #619433
AR
587
ClinVar variants
15
Pathogenic / LP
0.00
pLI score
0
Active trials
Clinical SummaryKIF20A
🧬
Gene-Disease Validity (ClinGen)
congenital heart disease · ARLimited

Limited evidence — not for standalone diagnostic reporting

Population Constraint (gnomAD)
Low constraint (pLI 0.00) — loss-of-function variants are relatively tolerated in the population.
📋
ClinVar Variants
15 Pathogenic / Likely Pathogenic· 358 VUS of 587 total submissions

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?LOEUF (Loss-of-function Observed/Expected Upper bound Fraction) is the upper bound of the 90% CI for LoF OE — the preferred gnomAD v4 metric. Lower = more intolerant to LoF. LOEUF < 0.35 = highly constrained.
0.74LOEUF
pLI 0.000
Z-score 3.10
OE 0.54 (0.400.74)
Tolerant

Typical tolerance to LoF variation

Missense Constraint?Missense Z-score: standard deviations fewer missense variants observed vs. expected. Z > 3.09 (p < 0.001) = gene does not tolerate missense variation. OE missense < 0.6 is also considered constrained.
1.28Z-score
OE missense 0.84 (0.770.91)
414 obs / 494.3 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?Shaded band = 90% confidence interval. Vertical tick = point estimate. Grey threshold line = gnomAD constraint cutoff for that variant class.
LoF OE?Ratio of observed to expected LoF variants. Upper CI bound (LOEUF) ≤ 0.35 = strong LoF constraint signal.0.54 (0.400.74)
00.351.4
Missense OE?Ratio of observed to expected missense variants. OE ≤ 0.6 = fewer missense variants than expected by chance.0.84 (0.770.91)
00.61.4
Synonymous OE?Control metric — synonymous variants are largely neutral and expected near OE = 1.0. Significant deviation may indicate annotation issues.0.99
01.21.6
LoF obs/exp: 29 / 53.4Missense obs/exp: 414 / 494.3Syn Z: 0.12

ClinVar Variant Classifications

587 submitted variants in ClinVar

Classification Summary

Pathogenic14
Likely Pathogenic1
VUS358
Likely Benign194
Benign18
Conflicting2
14
Pathogenic
1
Likely Pathogenic
358
VUS
194
Likely Benign
18
Benign
2
Conflicting

Curated Variants Distribution

Classified variants from ClinVar · 5 ACMG categories

ClassificationLoFMissense + InframeNon-codingSynonymousTotal
Pathogenic
1
0
13
0
14
Likely Pathogenic
0
0
1
0
1
VUS
15
301
37
5
358
Likely Benign
0
6
93
95
194
Benign
0
3
8
7
18
Conflicting
2
Total16310152107587

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

View in ClinVar →

Protein Context — Lollipop Plot

KIF20A · protein map & ClinVar variants

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

OMIM — Genotype-Phenotype Relationships

1 OMIM entry

?Cardiomyopathy, familial restrictive, 6

MIM #619433

Molecular basis of disorder known

Autosomal recessive
Clinical Literature
Landmark / reviewRecent case evidence
Key Publications
Landmark & review papers · by relevance
PubMed
Top 10 resultsSearch PubMed ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

Search ClinicalTrials.gov →