Better Quality of Life Seen With Imbruvica for Lymphoma Population

Patients with mantle cell lymphoma who were treated with Imbruvica had a better quality of life than those treated with another agent, according to the results of a recent study. 
Patients with mantle cell lymphoma (MCL) who were treated with Imbruvica (ibrutinib) had better quality of life (QOL) than those who were given temsirolimus, according to findings from the phase 3 RAY trial published online in Leukemia & Lymphoma.

Patients assigned to Imbruvica experienced greater improvement from baseline in their symptoms and lymphoma-specific concerns, and had superior health-related quality of life. The findings are based on patient-reported outcomes from the Functional Assessment of Cancer Therapy-Lymphoma (FACTLym), which includes the FACT-G plus FACT-LymS subscale, and the EQ-5D-5L questionnaires assessing symptoms, well-being, health status, and health-related quality of life of patients on treatment.

On the FACTLym subscale, 62 percent of patients on Imbruvica compared with 36 percent of patients on temsirolimus had at least a five-point change from baseline. Two-thirds of Imbruvica patients experienced a clinically meaningful improvement of at least 5 points in FACTLym total score.

Patients assigned to Imbruvica saw an improvement in the EQ-5D-5L utility values compared with baseline at all time-points up to cycle 17, which researchers said indicates a general improvement in the health-related quality of life. In contrast, patients in the temsirolimus arm experienced negative changes compared with baseline at all-time points.

FACT-G assesses general well-being while the FACTLymS measures the specific concerns of patients with lymphoma. EQ-5D-5L includes a five-item questionnaire — mobility, self-care, usual activity, pain/discomfort, anxiety/depression — and a visual analog scale (VAS) to determine general well-being.

“The results presented here suggest that ibrutinib reduces symptoms, and maintains and restores well-being, health status, and health-related quality of life among relapsed/refractory MCL patients,” wrote Hess et al. “Incorporating the patient’s subjective experience and perspective into clinical trial outcomes can provide an important complement to clinical endpoints and provide additional information for both clinicians and patients to consider when assessing the risk–benefit balance of treatments.”

The RAY trial was a phase 3, randomized, open-label, multicenter study comparing Imbruvica (139 patients) with temsirolimus (141 patients) in patients with relapsed/refractory MCL who had received one or more prior Rituxan (rituximab)-containing therapies. Imbruvica was associated with a statistically significant 57 percent reduction in disease progression or death.
Imbruvica was better tolerated than temsirolimus, with a superior adverse event (AE) profile despite a longer duration of exposure (14.4 months vs three months).

Researchers collected FACTLym and EQ-5D-5L responses from patients with MCL at the beginning of clinic visits prior to any procedures or physician interactions. Questionnaires were administered on day one of every cycle during the first six months, then every nine weeks up to 15 months after the first dose of study drug. After that point, researchers collected patient-reported outcomes every 24 weeks.

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