Disease Burden and Treatment Patterns Among US Patients with Hidradenitis Suppurativa: A Retrospective Cohort Study.

INTRODUCTION: Hidradenitis suppurativa (HS) is a chronic, autoinflammatory skin disease associated with many comorbidities. One biologic (adalimumab) is approved for HS. This study assessed the sociodemographic characteristics, comorbidities, treatment patterns, healthcare resource utilization (HCRU) and associated costs of patients with HS following biologic approval. METHODS: This non-interventional, retrospective cohort study involved adult (≥ 18 years) and adolescent (12-17 years) patients diagnosed with HS in the United States (US) using Optum's de-identified Clinformatics® Data Mart Database during the period 1 January 2016 to 31 December 2018. RESULTS: Of 42,843 identified patients, 10,909 met the incident HS patient criteria (10,230 adults, 628 adolescents, 51 patients aged <12 years). Patients were mostly diagnosed by a general practitioner/pediatrician (adults: 41.6%; adolescents: 39.6%) or dermatologist (adults: 22.1%; adolescents: 30.6%). Commonly reported Charlson comorbidities at pre-index in adult patients were diabetes without complications (20.4%), chronic pulmonary disease (16.4%) and diabetes with complications (9.0%), and the most frequent Elixhauser comorbidities were uncomplicated hypertension (38.3%), obesity (22.5%), uncomplicated diabetes (19.0%) and depression (17.4%). The burden of comorbidities generally increased over time after diagnosis in both adults and adolescents. HS-related surgical procedures were uncommon in the 2-years post-index period: an incision and drainage procedure was reported in 7.6% of adults and 6.4% of adolescents. Patients were predominantly treated with both topical and systemic antibiotic treatments (adults: 25.0% and 65.1%, respectively; adolescents: 41.7% and 74.5%, respectively). Biologic prescription was higher in adults than adolescents (3.5% vs. 1.8%). Total healthcare costs for adult and adolescent patients in the 2-years post-index period were US$42,143 and US$16,057, respectively, with outpatient costs accounting for the majority of these costs (US$20,980 and US$8408, respectively). CONCLUSION: In adult and adolescent patients with HS, comorbidity burden continues to increase after diagnosis. All-cause and HS-specific HCRU and costs are high in adults and adolescents with HS. These findings support the need for a multidisciplinary comprehensive care strategy for patients with HS.

Hospitalization Rates in Patients with Heart Failure and Reduced Ejection Fraction Initiating Sacubitril/Valsartan or Angiotensin-Converting Enzyme Inhibitors/Angiotensin Receptor Blockers: A Retrospective Cohort Study.

INTRODUCTION: The angiotensin receptor neprilysin inhibitor (ARNI) sacubitril/valsartan (SAC/VAL) has shown benefit in patients with symptomatic heart failure (HF), including those naïve to renin-angiotensin-aldosterone system inhibitor (RAASi) therapy, and is considered the preferred RAASi for chronic HF. Real-world data on ARNI, specifically in RAASi-naïve patients, are limited. This study compared real-world outcomes of ARNI (SAC/VAL) vs. angiotensin-converting enzyme inhibitor (ACEi) or angiotensin receptor blocker (ARB) therapy in RAASi-naïve patients with HF and reduced ejection fraction (HFrEF). METHODS: This retrospective cohort study included de-identified data on RAASi-naïve patients with HFrEF (left ventricular ejection fraction ≤ 40%) who had newly initiated SAC/VAL or ACEi/ARB between July 1, 2015, and March 31, 2019, from the Optum® Electronic Health Records database in the US. New SAC/VAL users were propensity score matched 1:2 with new ACEi/ARB users by pre-selected characteristics. One-year post-index rates of all-cause, HF, and cardiovascular hospitalizations and the composite of HF hospitalization or emergency room (ER) visits were measured using negative binomial regression. Time to first all-cause hospitalization, HF hospitalization, and composite of HF hospitalization or ER visits was measured using a subdistribution hazards model. RESULTS: The matched sample included 3059 new SAC/VAL and 6118 new ACEi/ARB users. Rates of all-cause hospitalization and composite of HF hospitalization or ER visits were significantly lower with SAC/VAL compared with ACEi/ARB (incidence rate ratio [95% confidence interval]: 0.87 [0.81-0.93] and 0.87 [0.81-0.94], respectively), whereas rates of HF hospitalizations and cardiovascular hospitalizations were similar (1.00 [0.91-1.11] and 0.94 [0.87-1.02], respectively). Time-to-event analyses also showed a similar trend. CONCLUSIONS: In real-world clinical practice, RAASi-naïve patients with HFrEF initiating SAC/VAL were less likely to be hospitalized than those initiating ACEi/ARB, suggesting a potential for a reduced clinical and economic burden in these patients.