Medical ConditionsCraniofacial & dental genetics: Kabuki syndrome
Medical ConditionsCraniofacial & dental genetics: Kabuki syndrome
Kabuki syndrome
Overview
Board takeaway: Assess missing teeth, clefting, joint laxity, and the child’s cardiac or immune status before treatment.
What causes Kabuki syndrome?
Pathogenic variants in KMT2D or KDM6A alter chromatin regulation. KMT2D-related disease is autosomal dominant; KDM6A-related disease is X-linked. Many cases are de novo. Long palpebral fissures with lateral lower-lid eversion, arched eyebrows, prominent ears, and persistent fetal fingertip pads are characteristic clues.
Which systemic findings matter for dental care in Kabuki syndrome?
Developmental disability, hypotonia, growth differences, joint laxity, scoliosis, hearing impairment, seizures, cardiac defects, and feeding or reflux problems may occur. Immune dysfunction can contribute to recurrent infections. Review renal, endocrine, and sleep findings where present rather than assuming a fixed multisystem severity.
What oral findings occur in Kabuki syndrome?
Missing teeth, particularly incisors or premolars, abnormal tooth size or shape, enamel defects, malocclusion, and a high or cleft palate are reported. Lip pits and talon cusps may occur. Temporomandibular laxity can affect comfortable opening; craniofacial anatomy and clefting may complicate the airway.
How should dental treatment be adapted for Kabuki syndrome?
Support communication and prevention, evaluate tooth number and development, and coordinate cleft or orthodontic care. Avoid excessive jaw opening when joint laxity is present. Review cardiac anatomy and repair status for prophylaxis decisions. Significant immune dysfunction or recurrent infections require medical coordination for invasive care. Anesthesia planning considers airway anatomy, sleep symptoms, hypotonia, and cardiopulmonary status.
What treatment and prognosis apply to Kabuki syndrome?
Care addresses the individual's developmental, cardiac, immune, feeding, sensory, and orthopedic needs. Many patients live into adulthood; long-term function and medical risk vary. A characteristic dental anomaly helps recognition but does not predict the severity of organ involvement.