CpG	Cytosine-phosphate-guanine
AD	Alzheimer’s Disease
DNA	Deoxyribonucleic Acid
ROS	Reactive Oxygen Species
MMR	Mismatch Repair
BER	Base Excision Repair
MAPK	Mitogen-Activated Protein Kinase
METTL3	Methyl Transferase-like 3
METTL14	Methyl Transferase-like 14
WTAP	Wilm’s Tumor-1-Associated Protein
m6A	N6-methyladenosine
tRNA	RNA transfer
rRNA	ribosomal RNA
ATP	Adenosine Triphosphate
OXPHOS	Oxidative Phosphorylation
IgG	Immunoglobulin G
IgA	Immunoglobulin A
DNMTs	DNA Methyltransferases
SAM	S-Adenosyl-Methionine
DunedinPoAm38	Dunedin Pace of Aging Methylation
DunedinPACE	Dunedin Pace of Aging calculated from the Epigenome
CRP	C-Reactive Protein
NFTs	Neurofibrillary Tangles
APP	Amyloid Precursor Protein
MAPT	Microtubule Associated Protein Tau
Ach	Acetylcholine
5hmC	5-hydroxymethylcytosine
Aβ	Amyloid-β
NLRP3	NOD-like Receptor Protein 3
NF-kB	Nuclear Factor Kappa B
SAD	Sporadic Alzheimer’s Disease
FAD	Familial Alzheimer’s Disease
EOAD	Early-Onset Alzheimer’s Disease
LOAD	Late-Onset Alzheimer’s Disease
PSEN1	Presenilin 1
PSEN2	Presenilin 2
EM	Episodic Memory
WM	Working Memory
SM	Semantic Memory
PO	Perceptual Orientation
PS	Perceptual Speed
GCF	Global Cognitive Functioning
GCTA	Genome-Wide Complex Trait Analyses
PFCTX	Prefrontal Cortex
DLPFCTX	Dorsolateral Prefrontal Cortex
CRBLM	Cerebellum
FCTX	Frontal Cortex
PONS	Pons
TCTX	Temporal Cortex
GWAS	Genome-Wide Association Study
CETS	Cell Epigenotype Specific
DNAm	DNA Methylation
IEAA	Intrinsic Epigenetic Age Acceleration
EEAA	Extrinsic Epigenetic Age Acceleration
HDL	High-Density Lipoprotein
APOE	Apolipoprotein E
ROS	Religious Orders Study
MAP	Rush Memory Aging Project
AIBL	Australians Imaging Biomarkers and Lifestyle
ADNI	Alzheimer’s Disease Neuroimaging initiative
CU	Cognitively Unimpaired
MCI	Mild Cognitive Impairment
PET	Positron Emission Tomography
MRI	Magnetic Resonance Imaging
EN	Zhang Elastic Net
BLUP	Zhang Best Linear Unbiased Prediction
DBAge	Disproportionate Biological Age
DiffAge	Difference in Age
TL	Telomere length
mtDNACN	Mitochondrial DNA Copy Number
US	United States
WGS	Whole-Genome Sequencing
NIA	National Institute on Aging
(CCage+)	Accelerated Cortical Clock Age
(CCage-)	Non-Accelerated Cortical Clock Age
(mtDNACage+)	Age-Accelerated mtDNA-CN
(mtDNACage-)	Non-Age-Accelerated mtDNA-CN
ADRDs	AD-Related Disorders
FSH-OC	Framingham Heart Study Offspring Cohort
TBV	Total Brain Volume
HC	Hippocampal Grey Matter Hyperintensity
SA	Total Cortical Surface Area
meQTLs	Methylation Quantitative Trait Loci
CN	Cognitively Normal
BMI	Body Mass Index
D-loop	Displacement loop
CYTB	Cytochrome b
COX II	Cytochrome C Oxidase Subunit II