Chen, Naijun

AbstractBackgroundThis retrospective study gathered medical/pharmacy claims data on patients with inflammatory bowel disease (IBD) between January 01, 2000 and March 31, 2019 from the IBM MarketScan commercial claims database to assess the real-world impact of fatigue on healthcare costs in patients newly diagnosed with IBD.MethodsEligible participants were ≥18 years, newly diagnosed with IBD (≥2 separate claims), and had ≥12 months of continuous database enrollment before and after fatigue diagnosis. The date of fatigue diagnosis was the index date; participants were followed for 12 months post-index. Patients with (cases) or without (controls) fatigue were matched 1:1 by propensity score matching. Patients with evidence of prior IBD diagnosis/treatment, or those with a chronic disease other than IBD wherein fatigue is the primary symptom, were excluded. Healthcare resource utilization (HCRU), including hospitalizations, inpatient and outpatient visits, and associated costs were compared between cases and controls.ResultsMatched IBD cohorts (21 321 cases/21 321 controls) were identified (42% Crohn’s disease [CD] and 58% ulcerative colitis [UC]) with similar baseline characteristics (average age: 46 years; 60% female). Cases versus controls had significantly more all-cause outpatient visits (incidence rate ratio [IRR], 95% confidence intervals [95% CI]: 1.64 [1.61, 1.67], P < .001) and all-cause hospitalizations (IRR [95% CI]: 1.92 [1.81, 2.04], P < .001); as well as significantly higher all-cause total direct healthcare costs (mean: $24 620 vs. $15 324; P < .001). Similar findings were observed for IBD-related outcomes, as well as in CD- and UC-specific subgroups.ConclusionsPresence of fatigue is associated with an increase in HCRU and total medical costs among patients newly diagnosed with IBD.

OBJECTIVE: To evaluate open-label adalimumab therapy for clinical effectiveness, fistula healing, patient-reported outcomes and safety in Canadian patients with moderate to severe Crohn’s disease (CD) who were either naive to or previously exposed to antitumour necrosis factor (anti-TNF) therapy.METHODS: Patients with moderate to severe CD (CD activity index [CDAI] score of greater than 220, or Harvey-Bradshaw index [HBI] of 7 or greater) were eligible. Patients received open-label adalimumab as induction (160 mg and 80 mg subcutaneously [sc]) at weeks 0 and 2, respectively and maintenance (40 mg sc every other week) therapy. At or after eight weeks, patients with flare or nonresponse could have their dosage increased to 40 mg sc weekly. Patients were followed for a minimum of six months or until adalimumab was commercially available in Canada.RESULTS: Of the 304 patients enrolled, 160 were infliximab experienced, while 144 were anti-TNF naive. HBI remission (HBI score of 4 or lower) at week 24 was achieved by 53% of anti-TNF-naive and 36% of infliximab-experienced patients (P<0.01; P<0.001 for both groups for all visits versus baseline). Fistula healing rates at week 12 were 48% for anti-TNF-naive patients, and 26% for infliximab-experienced patients. At week 24, fistula healing rates were significantly greater for the anti-TNF-naive group (60% versus 28%; P<0.01). Improvements in quality of life and work productivity were sustained from week 4 to week 24 for all patients. Serious infections occurred in 2% of patients.CONCLUSIONS: Adalimumab therapy induced and sustained steroid-free remission in both infliximab-experienced and anti-TNF-naive patients with moderate to severe CD. Clinically meaningful rates of fistula healing were also observed. Improvements in patient-reported outcomes were sustained throughout the 24-week study period.