EVENITY™ is indicated for the treatment of osteoporosis in postmenopausal women at high risk for fracture, defined as a history of osteoporotic fracture, or multiple risk factors for fracture; or patients who have failed or are intolerant to other available osteoporosis therapy. Read More

available osteoporosis therapy. The anabolic effect of EVENITY™ wanes after 12 monthly doses of therapy. Therefore, the duration of EVENITY™ use should be limited to 12 monthly doses. If osteoporosis therapy remains warranted, continued therapy with an antiresorptive agent should be considered. Close


Head-to-head fracture study vs alendronate in post-fracture women with postmenopausal osteoporosis1

EVENITY™ was compared to a commonly prescribed antiresorptive2

Phase 3 Event-Driven Study in Postmenopausal Women With Osteoporosis Receiving EVENITY™ First Followed by Alendronate vs Alendronate Alone1,2
ARCH Study Design

SC = subcutaneous; PO = orally; QM = monthly; QW = weekly.

Randomized, double-blind, alendronate-controlled, event-driven study1

4093 women randomized to receive 12 months of treatment1

All women supplemented with daily calcium and vitamin D

After 12-month treatment period, women in both arms transitioned to open-label alendronate while remaining blinded to their initial treatment

Co-primary endpoints1


Co-primary Endpoints1

  • Incidence of morphometric vertebral fracture at 24 months
  • Time to first clinical fracture (nonvertebral and symptomatic vertebral fracture) through the primary analysis which was performed when at least 330 subjects had a clinical fracture and all subjects had completed the 24-month visit

Key Secondary Endpoints2

  • BMD at lumbar spine, total hip, and femoral neck at 12 and 24 months
  • Incidence of nonvertebral fracture at primary analysis*

Additional Endpoints2

  • Hip fracture, major osteoporotic fracture, and other fracture categories at primary analysis*

*The primary analysis was planned for when clinical fracture events had been confirmed in at least 330 patients and all patients had completed the month 24 visit.1


Key Inclusion Criteria1,2

  • Postmenopausal women aged 55 to 90 years
  • BMD T-score and fracture history
    • BMD T-score ≤ -2.5 at the total hip or femoral neck, and
        • ≥ 1 moderate or severe vertebral fracture or
        • ≥ 2 mild vertebral fractures
    • OR

    • BMD T-score ≤ -2.0 at the total hip or femoral neck, and
        • ≥ 2 moderate or severe vertebral fractures or
        • A history of proximal femur fracture

Key Exclusion Criteria2,3

  • Contraindications or signs of intolerance to alendronate
  • Recent use of agents affecting bone metabolism

Baseline Characteristics1,2

  • Mean age: 74 years
  • Fracture history: 99.0% with previous osteoporotic fracture and 96% with prevalent vertebral fracture (3.5% mild, 26.9% moderate, 65.7% severe)
  • Mean BMD T-scores: -2.96 (lumbar spine), -2.80 (total hip), -2.90 (femoral neck)

EVENITY™ may increase the risk of myocardial infarction, stroke and cardiovascular death. EVENITY™ should not be initiated in patients who have had a myocardial infarction or stroke within the preceding year. Consider whether the benefits outweigh the risks in patients with other cardiovascular risk factors. Monitor for signs and symptoms of myocardial infarction and stroke and instruct patients to seek prompt medical attention if symptoms occur. If a patient experiences a myocardial infarction or stroke during therapy, EVENITY™ should be discontinued.

References: 1. EVENITY™ (romosozumab-aqqg) prescribing information, Amgen. 2. Saag KG, Petersen J, Brandi ML, et al. Romosozumab or alendronate for fracture prevention in women with osteoporosis. N Engl J Med. 2017;377:1417-1427. 3. Cosman F, Crittenden DB, Adachi JD, et al. Romosozumab treatment in postmenopausal women with osteoporosis. N Engl J Med. 2016;375:1532-1543.