Phase 2 Study of Upadacitinib (RINVOQ®) Alone or as a Combination Therapy Meets Primary and Key Secondary Endpoints in Patients with Systemic Lupus Erythematosus
AbbVie (NYSE: ABBV) today announced the results of the Phase 2 SLEek study evaluating upadacitinib (RINVOQ® 30 mg) alone and in combination [ABBV-599 high dose (elsubrutinib 60 mg and upadacitinib 30 mg)] in adults with moderately to severely active systemic lupus erythematosus (SLE) who continued to receive standard lupus therapies. The study results are being presented as an oral presentation during the European Congress of Rheumatology, EULAR 2023.
In the Phase 2 SLEek study, a greater proportion of patients receiving upadacitinib 30 mg or ABBV-599 high dose achieved the primary endpoint, SLE Responder Index (SRI-4) and steroid dose less than or equal to 10 mg prednisone equivalent once per day at week 24, compared to placebo (54.8 percent; p=0.028 and 48.5 percent; p=0.081* versus 37.3 percent, respectively).1 SRI-4 and steroid dose less than or equal to 10 mg prednisone equivalent per day assess reductions in disease activity and glucocorticoid use, respectively.3
“There are limited treatment options for people living with SLE, leaving physicians challenged on how to effectively slow disease progression and limit potential organ damage in their patients,” said Roopal Thakkar, M.D., senior vice president, development and regulatory affairs and chief medical officer, AbbVie. “As a leader in immunology, AbbVie is committed to advancing care in areas of unmet need, such as SLE. We are encouraged by these positive Phase 2 data and look forward to continuing to study upadacitinib for systemic lupus erythematosus in two Phase 3 trials as part of our ongoing clinical program.”
Key secondary endpoints were also achieved at week 48 in both active treatment groups, including lupus flares measured by the Safety of Estrogens in Lupus Erythematosus National Assessment (SELENA) Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) Flare Index (SFI) and time to first flare, which showed greater treatment effect in the upadacitinib 30 mg and ABBV-599 high dose groups compared to placebo.2 Other measures of disease activity and treatment response were also met, including achievement of BICLA response, SRI-4, and Lupus Low Disease Activity State (LLDAS) in the upadacitinib 30 mg and ABBV-599 high dose groups compared to placebo.