
TIMELY ACTION CAN HELP PATIENTS MOVE MORE QUICKLY TOWARDS DIAGNOSIS AND TREATMENT OPTIONS TO PLAN FOR WHAT IS NEXT1,2
Detect1,3
Consistently screen for evidence of mild cognitive impairment by integrating a routine cognitive work-up into your practice.
Assess3,4
Evaluate the potential cause of cognitive impairment to rule out non-AD causes with routine labs and imaging tests, then consider blood biomarker testing for patients with cognitive impairment who meet the testing criteria.
Refer1,3
Connect patients promptly with AD specialists to confirm diagnosis and guide next steps in care.
With amyloid-targeting therapies (ATTs) available for patients in the early symptomatic stages of AD, timely referral to an AD specialist plays an important role in evaluation and disease management.1,3,4,5
Commercially available blood-based biomarker (BBM) tests used to detect amyloid positivity are not standalone tests. The results must be interpreted in conjunction with clinical assessment results. Patients must meet testing criteria.6
YOUR ROLE IS VITAL. EARLY RECOGNITION AND TIMELY REFERRAL CAN HELP DEVELOP A CARE PLAN FOR YOUR PATIENTS.1,2,7,8
Delayed Diagnosis
2-3
YEARS
Alzheimer’s disease (AD) diagnosis is delayed on average by 2-3 years after symptoms onset3,9
AD Severity Progression Over Time
~38%
of individuals in the US with mild AD are estimated to progress to moderate or severe AD annually*10,11
Patients who progress beyond the MCI or mild dementia stage of the disease could miss the opportunity for treatment with amyloid-targeting therapies (ATTs) approved to treat early symptomatic AD.1,12
*This study estimated annual progression rates in amyloid-positive patients across the AD continuum, leveraging longitudinal prospective data from the US National Alzheimer's Coordinating Center(NACC) Uniform Data Set. This data set included nearly 30,000 patients with varying levels of cognitive impairment collected from September 2005 through December 2017 from approximately 30 US Alzheimer's disease research centers.10
Patients in the prevalent population (n=4370) had a mean age of 77.72 (standard deviation [SD]: 10.48). Females comprised 51.0% of the population. The breakdown of Clinical Dementia Rating Health State was: 2.9% asymptomatic, 9.3% MCI-AD, 11.9% Mild AD Dementia, 21.5% Moderate AD Dementia, 30.6% Severe AD Dementia, and 23.8% died. Key limitations of this study included the fact that NACC data are not precisely 1 year. In addition, amyloid-positive patients represented a small subset of the overall NACC patient sample and therefore may not be generalizable. Based on this, the authors collaborated with clinical experts to develop an approach of identifying amyloid-positive patients. Patients were considered amyloid positive if, within 10 years of their first visit, they had either 1) abnormally elevated amyloid on a PET scan, 2) abnormally low amyloid based on CSF, or 3) autopsy result consistent with a patient having been amyloid positive.10
References:
- Porsteinsson AP, Isaacson RS, Knox S, et al. Diagnosis of early Alzheimer’s disease: clinical practice in 2021. J Prev Alzheimers Dis. 2021;8:371-386.
- Galvin JE, Aisen P, Langbaum JB, et al. Early stages of Alzheimer’s disease: evolving the care team for optimal patient management. Front Neurol. 2021;11:592302. doi:10.3389/fneur.2020.592302
- Sabbagh MN, Lue LF, Fayard D, et al. Increasing precision of clinical diagnosis of Alzheimer’s disease using a combined algorithm incorporating clinical and novel biomarker data. Neurol Ther. 2017;6(suppl 1):S83-S95. doi:10.1007/s40120-017-0069-5
- McDade E, Bednar MM, Brashear HR, et al. The pathway to secondary prevention of Alzheimer’s disease. Alzheimers Dement (N Y). 2020;6(1):e12069. doi:10.1002/trc2.12069
- Iwatsubo T, Irizarry MC, Lewcock JW, et al. Alzheimer’s targeted treatments: focus on amyloid and inflammation. J Neurosci. 2023;43(47):7894-7898.
- Schindler SE, Galasko D, Pereira AC, et al. Acceptable performance of blood biomarker tests of amyloid pathology — recommendations from the Global CEO Initiative on Alzheimer’s Disease. Nat Rev Neurol. 2024;20(7):426-439. doi:10.1038/s41582-024-00977-5
- Aisen PS, Cummings J, Jack CR Jr, et al. On the path to 2025: understanding the Alzheimer’s disease continuum. Alzheimers Res Ther. 2017;9(1):60. doi:10.1186/s13195-017-0283-5
- Hort J, O’Brien JT, Gainotti G, et al. EFNS guidelines for the diagnosis and management of Alzheimer’s disease. Eur J Neurol. 2010;17(10):1236-1248. doi:10.1111/j.1468-1331.2010.03040.x
- Boise L, Morgan DL, Kaye J, et al. Delays in the diagnosis of dementia: perspectives of family caregivers. Am J Alzheimers Dis Other Dement. 1999;14(1):20-26.
- Potashman M, Buessing M, Levitchi Benea M, et al. Estimating progression rates across the spectrum of Alzheimer's disease for amyloid-positive individuals using National Alzheimer's Coordinating Center data. Neurol Ther. 2021;10(2):941-953. doi:10.1007/s40120-021-00272-1
- Data on File. DOF-DN-US-0043. Lilly USA, LLC
- CMS.gov. Monoclonal antibodies directed against amyloid for the treatment of Alzheimer’s disease (AD). Accessed September 19, 2023. NCD - Monoclonal. Antibodies Directed Against Amyloid for the Treatment of Alzheimer’s Disease (AD) (200.3)