Abstract Details

Title The Peruvian Alzheimer Disease Initiative (PeADI): An international effort model to increase diversity in AD research

Topic Aging, Dementia, and Behavioral Neurology

Presentation(s) S15 - Innovative Diagnostics in Dementia (1:12 PM-1:24 PM)

Poster/Presentation
Number 002

Background Peru is one of the five largest countries in Latin America and harboring a high Amerindian ancestry component in this population.The Latin American population, including Peruvians,are underrepresented in research studies of AD.

Objective We have developed an international collaborative research initiative to ascertain a Peruvian cohort for AD and other related dementias for genetic studies of Amerindian individuals.

Design/Methods PeADI was developed to recruit and enroll Peruvian adults aged 65 and older to a comprehensive genetic AD study.Individuals will get whole genome sequencing and plasma biomarkers.Participants included cases with AD and ADRD, healthy controls as well as multiplex AD families.Since 2019,we have established a multisource ascertainment approach including recruitment at main hospitals,outreach community activities and more recently due to the COVID19 pandemic remote recruitment and home visits in Lima, the capital city.Our recruitment has expanded to three regions from the Andes highlands (Puno,Huancayo,Cusco) and one region from the southern coast (Tacna).All participants are enrolled using a standard clinical and cognitive protocol administered by neurologists and neuropsychologists.

Results As of September 2022,we have enrolled 132 AD and other dementia cases, 292 controls and 6 multiplex AD families. While the majority of participants was recruited in Lima,45% controls and 7% of cases have been recruited in regions outside Lima.We have confirmed a significant association between APOE and AD in Peruvian Population higher than we have observed in non-Hispanics.In addition to ascertainment activities, we are working closely with the respective sites to develop a network and resources for AD research across Peru.To date,we have developed local research capacities within each region,including training opportunities for investigators, coordinators and lab technicians, and basic equipment for all regions.

Conclusions PeADI study shows the importance of equitable international north-south cooperation and local network cooperation to increase representation of understudied admixed populations to help us understand Amerindian ancestry in drug target discovery.

Authors/Disclosures
Maryenela Z. Illanes-Manrique, MD, Atlantic Fellow (Instituto Nacional de Ciencias Neurologicas) PRESENTER	Dr. Illanes-Manrique has nothing to disclose.
Pedro Mena (University of Miami)	No disclosure on file
Karina Milla-Neyra (Instituto Nacional De Ciencias Neurologicas)	No disclosure on file
Larry Adams	No disclosure on file
Koni Mejia (Daniel Alcides Carrion Hospital)	Dr. Mejia has nothing to disclose.
	No disclosure on file
Rosario Isasi (Dpt Human Genetics University of Miami Miller School of Medicine)	No disclosure on file
	No disclosure on file
Gary W. Beecham, PhD (University of Miami, Hussman Institute for Human Genomics)	The institution of Dr. Beecham has received research support from NIH. The institution of an immediate family member of Dr. Beecham has received research support from NIH.
Ivan Cornejo-Herrera, MD (Instituto Nacional De Ciencias Neurologica)	Dr. Cornejo-Herrera has nothing to disclose.
Jeffery Vance, MD, PhD (University of Miami)	Dr. Vance has received personal compensation in the range of $500-$4,999 for serving as an Editor, Associate Editor, or Editorial Advisory Board Member for neurology genetics.
	No disclosure on file
Sheila C. Suarez, MD (Instituto Nacional De Ciencias Neurologicas)	The institution of Dr. Suarez has received research support from Alzheimer's Association.
Michael L. Cuccaro	No disclosure on file
Elison Sarapura-Castro, MD (Instituto Nacional De Ciencias Neurologicas)	Dr. Sarapura-Castro has nothing to disclose.
	No disclosure on file
Mario R. Cornejo Olivas, MD (INSTITUTO NACIONAL DE CIENCIAS NEUROLOGICAS)	The institution of Dr. Cornejo Olivas has received research support from CONCYTEC-PROCIENCIA PERU. Dr. Cornejo Olivas has a non-compensated relationship as a Board member at Rare Disorders Burou (CCI-MINSA) with Ministry of Health in Peru that is relevant to AAN interests or activities.
Margaret A. Pericak-Vance, PhD (University of Miami Miller School of Medicine)	Dr. Pericak-Vance has nothing to disclose.