0589 Concomitant Aroxybutynin and Atomoxetine (AD109) with GLP-1 Agonists: An Analysis of the SynAIRgy and LunAIRo Trials in Obstructive Sleep Apnea

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Abstract Introduction AD109, an investigational oral anti-apneic neuromuscular modulator, combines in one tablet the novel antimuscarinic, aroxybutynin (2.5 mg), with the selective norepinephrine reuptake inhibitor, atomoxetine (75 mg). AD109 significantly improved the apnea-hypopnea index and oxygenation vs placebo (PBO) in two phase 3 clinical trials in OSA. This exploratory analysis evaluated concomitant administration of AD109 with glucagon-like peptide-1 receptor agonists (GLP-1 RA) on weight change in OSA. Methods SynAIRgy (NCT05813275; N=646) and LunAIRo (NCT05811247; N=660) were randomized, double-blinded, PBO-controlled, parallel-arm phase 3 trials of AD109 vs PBO in adults with mild-to-severe OSA (AHI >5) who failed or refused positive airway pressure therapy. Participants must have had a body mass index (BMI) 18.5–40 kg/m2 for males / 18.5–42 kg/m2 for females. Participants receiving GLP-1 RA for diabetes were permitted. Body weight was assessed throughout the trials. Results One-hundred and six participants were enrolled in the phase 3 trials taking a GLP-1 RA for diabetes (PBO+GLP-1 RA: n=48; AD109+GLP-1 RA: n=58). In participants receiving a GLP-1 RA with baseline BMI < 30, AD109 reduced weight by 2.7% (vs PBO: -1.4%, P=0.08) and 0.5% (vs PBO: 2.3%, P=0.60) at Week 26 and Week 51, respectively. In participants receiving a GLP-1 RA with baseline BMI 30 to 34.9, AD109 reduced weight by 0.9% (vs PBO: 1.2%, P=0.84) and 2.5% (vs PBO: 3.3%, P=0.85) at Week 26 and Week 51, respectively. In participants receiving a GLP-1 RA with baseline BMI ≥35, AD109 reduced weight by 5.5% (vs PBO: 0.9%, P=0.02) and 11.5% (vs PBO: 3.8%, P=0.04) at Week 26 and Week 51, respectively. Participants not receiving GLP-1 RA (n=979) showed smaller weight reductions across BMI classes; in participants with BMI ≥35, AD109 reduced weight by 1.4% (vs PBO: 0.2%, P=0.002) and 2.8% (vs PBO: 1.4%, P=0.19) at Week 26 and Week 51, respectively. Conclusion In this exploratory analysis using pooled data from SynAIRgy and LunAIRo, results indicate that participants with a baseline BMI ≥35 receiving AD109+GLP-1 RA experienced progressively greater weight loss over time relative to GLP-1 RA alone. Future studies are needed to further evaluate concomitant administration of AD109+GLP-1 RA in OSA. Support (if any) These studies were supported by Apnimed, Inc.

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