Suicidal Ideation and Sleep Disturbances Among People With Huntington Disease: Evidence From the HDBOI Study.

Background and objectives: Suicidal ideation and sleep disturbances are more common among people with Huntington disease (PwHD) than otherwise healthy peers; however, the scope and magnitude of these challenges are not well understood. This study evaluated suicidal thoughts and sleep disturbances among PwHD in Europe and the United States using data from the Huntington's Disease Burden of Illness (HDBOI) study.

Methods: The HDBOI study is a cross-sectional burden-of-illness study of PwHD in France, Germany, Italy, Spain, the United Kingdom, and the United States. Eligible participants were adults (18 years and older) with motor manifest Huntington disease (HD) ≥ 12 months before study recruitment. PwHD were categorized as having early-stage (ES), mid-stage (MS), or advanced-stage (AS) HD as reported by the treating physician. Data were collected by the physician, and a voluntary questionnaire was completed by the PwHD or a caregiver. All findings were analyzed descriptively. Differences were assessed using analysis of variance or χ² tests.

Results: A total of 2,094 PwHD were included; 1,602 (77%) were from Europe and 492 (23%) were from the United States, with 846 (40%) with ES, 701 (33%) with MS, and 547 (26%) with AS HD. PwHD reported current (13%, n = 272) or previous (28%, n = 575) suicidal ideation, which was more common with advanced HD (ES, 11%; MS, 14%; AS, 15%; p < 0.05). Of 482 questionnaire respondents, 91% (n = 437) reported difficulty sleeping, which was more common with AS HD (p < 0.05; [p = 0.000]).

Discussion: The HDBOI study showed a substantial burden of suicidal ideation and sleep disturbances among PwHD, which tended to worsen with disease severity.