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Protective and Enhancing Alleles. [See also sortable spreadsheet format]
Multigenic traits can have single gene variants -- often rare in populations, (or synthetic alleles absent in nature) with large impacts.
Genotype: -/- means double-null for the gene (from both mother and father). +/- means one copy ok (+) and one broken (-) is sufficient to have a positive impact. The rest require very specific sequences to see the positive effect. For example E6V means that at position 6 an "E" (Glutamate amino acid codon GAG) is mutated into a "V" (Valine codon GTG).

Gene GenotypeProtective, resilient or extreme effects Potential Negatives:
LRP5  G171V/+Extra-strong bonesLow Buoyancy
MSTN  -/-Large, lean muscles, low atherosclerosis
FBXO32  -/-Reduced muscle atrophy-
MC1R  overprod.UV radiation resistance-
TRIM63  -/-Reduced muscle atrophyHypertrophic cardiomyopathy
SCN9A  -/-Pain insensitiveUnnoticed harm
FAAH-OUT  del/delPain insensitiveUnnoticed harm
NTRK1  del/delPain insensitive, no sweat Unnoticed harm, hyperthermia
HSD17B13  +/TA(lof)Low Chronic Liver Disease
HOXA11  unstatedAugmented manipulation ability with six-fingered hands
ABCC11  -/-Low odor production
PRNP  G127VPrion resistance
IFNL4  dG/TTHigh Hepatitis C virus clearance
CCR5  -/-HIV resistanceW.Nile Virus & flu; bone
FUT2  -/-Norovirus resistanceCrohn's disease
IL23R  R381Q/+IBD: Crohn's disease, Ulcerative colitis
HBB  E6V/+Malaria resistanceExertional rhabdomyolysis
PKU  +/-Ochratoxin resistance?Cognitive disability in -/-
CFTR  +/-TB or other?GI,Lung issues in -/-
HEXA  +/-Mycobacteria resistance?lethal by 4yo -/-
APOL1  +/-Trypanosoma bruceiKidney disease risk
APOA1  R173C/+Low HDL & CVD
PCSK9  -/-Low coronary diseaseDiabetes, Low cognition
GHR,GH  -/-Low cancer, stature
SLC30A8  -/+Low T2 Diabetes
IFIH1 = MDA5  E627X/+Low T1 Diabetes
ANGPTL3  -/+Lipid and cardiac health
BDKRB2a/g expressionDeep Diving
PDE10Ac/t incr thyroxineBreath-hold diving
EGLN1  a/gHigh altitude
EPAS1  3.4kb delHigh altitude
MTHFR  A222VHigh altitude
EPOR  W439XHigh oxygen transport
BHLHE41 = DEC2  P385R/+Less sleep
GRM1  R889W/+ or S458A/+Less sleep
NPSR1  Y206H/+Less sleep
ADRB1  A187VLess sleep
APOE  E2/E2Low Alzheimer's (E2=R112C, R158C)
APOE  R136S/R136SResilience to dominant Alzheimer's PSEN1-E280A
RELN  H3447R/+Resilience to dominant Alzheimer's PSEN1-E280A
APP  A673T/+Low Alzheimer's
GLUK4  del/+Low bipolar, high cognitive
RIMS1 R844H/+High cognitiveLate onset visual loss
BPIFB4 LAV:I229V/+Healthspan, low CVD
CETPI405V/I405Vexceptional longevity & cognitive
SIRT6A313S or N308Kexceptional longevity
TPH2 g703tLow aggressiveness / anxiety.
DRD4exon3 VNTRLow anxiety, high risk tolerance.
COMTV158MLow anxiety, high risk tolerance.ADHD, headaches, etc
SLC6A443bp indelLow stress, ADHD.?
BDNFM66VLearning.
NR3C1a>gLow PTSD risk.
KO, Knock-in, gene therapyMice & other mammals
nmrHas2overprod.Low aging
CISD2overprod.Low aging
BUB1Boverprod.Low aging
PAWRoverprod.Low aging
PPARGoverprod.Low aging
PTENoverprod.Low aging
SIRT1overprod.Low aging
SIRT6overprod.Low aging
SOST  -/-Bone loss resistance
NPC1  +/-Ebola resistance
CTNNB1overprod.Radiation resistance
TERToverprod.Low aging
CDKN2Aoverprod.Low cancer
TP53overprod.Low cancer
GRIN2Boverprod.High learning & memory
NR2Boverprod.Learning & memory enhancement
ARHGAP11Bhuman transgene in marmosetsIncreased neocortex size & folding
MCPH1human transgene in rhesusHuman-like brain neoteny
PDE4B inhib.Low anxiety, high problem solving
FOXP2humanizedLearn stimulus-response associations faster
CCR5-/- & +/-Enhanced learning, low atherosclerosis, low hepatotoxFlavi- & Orthomyxo- viruses
NLGN3R451C/YEnhanced spatial learning abilities Impaired social (ASD)
KCNH3-/- & +/-Enhanced cognitive function
SP0535transgenicimproved cognitive ability and working memory
SERPINE1null/+Median survival increase from 75 to 85 yr
KL=KLOTHOgene therapyAge-related diseases (review-2016)(cognitive-2023)
FGF21gene therapyAge-related
sTGFβR2gene therapyAge-related
OCT4+SOX2+KLF4gene therapyOptic nerve damage recovery
Cognition-related gene therapies
NGF overprod.(human) Low Alzheimer's
NEU1 overprod.(mice) Low Alzheimer's
NGFR overprod.(mice) Low Alzheimer's
miR-29b overprod. (human cells) Low Alzheimer's
BACE1 siRNAs overprod.(mice) Low Alzheimer's
anti-amyloid antibodies overprod.(mice) Low Alzheimer's
APPsα overprod.(mice) Low Alzheimer's
Based on genome comparisons
VariousAllelesParrot longevity & cognition
CHRNA1W187Ralpha-neurotoxin resistance in Mellivora, Erinaceus, Herpestes, Sus, Naja
NOTCH2NLOverprod.Human-specific modifiers of cortical size

Note: Some of the above studies need independent reproduction.
For example: "Ten genes reported to cause Mendelian sleep conditions characterised by extreme sleep duration or timing, including familial natural short sleep (ADRB1, DEC2/BHLHE41, GRM1 and NPSR1), advanced sleep phase (PER2, PER3, CRY2, CSNK1D and TIMELESS) and delayed sleep phase (CRY1) are often not highly penetrant when ascertained incidentally from the general population." [Such penetrance can lead to work on modifier genes].
Lower case a,c,g,t are nucleotide variants (typically regulatory), while uppercase indicated amino acid variants.
See also:
Longevity: GenAge Database of Ageing-Related Genes
LAV: 30 rare, protective, non-synon mitonuclear Longevity Associated Variants in 18 genes: ITPR1, LRPPRC, ALDOA, MFN2, SPTLC2, ACACB, SAMM50, FAR1, HARS2, ISCU, PMPCB, ATXN3, NDUFS2, ACADM, KIF1B, PRR5L, CYBB, DEPTOR
Height: ~9,500 SNPs explain ~29% of phenotypic variance
Pathogens: CFTR, NPC1, HEXA: Resistance to typhoid, cholera, mycotoxin abortions, enveloped viruses via MOGS, filoviruses, rabies via myasthenia gravis
Space: radiation, low gravity, etc.

If you know of additional published or unpublished examples, or anyone who is exceptionally resistance to any disease, please let us know.
Resilience Project, HMS Fairbairn Family Lyme Research Initiative.
Thanks (in chronological order): Joao Pedro de Magalhaes (HAGR), Jason Bobe, Cory Smith, Luke Dabin, Mark Handle, David Thompson, Noah Davidsohn(6), Dimitrie Leustean, Sergiy Velychko, Christopher Schön(3), Chris Mason(3), Michael Shadpour, Siddharth Iyer for suggested additions. --GMC

26-Oct-2011 4 genes: MSTN, LRP5, PCSK9, CCR5
04-Apr-2012 5 genes: + FUT2
23-Oct-2013 6 genes: + APP
05-Feb-2014 11 genes.
10-Sep-2015 19 genes.
06-Sep-2017 28 genes.
24-Oct-2018 44 genes.
14-Aug-2019 51 genes.
09-Oct-2019 52 genes: + ADRB1
18-Oct-2019 54 genes: + NPSR1 + NTRK1
08-Nov-2019 55 genes: + APOA1
05-Jan-2022 59 genes: + MCPH1 + NOTCH2NL + ARHGAP11B + NR2B
23-Aug-2022 60 genes: + KCNH3
21-Nov-2022 67 genes: + Klotho + CHRNA1 + FGF21 + sTGFβR2 + OCT4 + SOX2 + KLF4
22-Nov-2022 74 genes: + CISD2 + BUB1B + PAWR + PPARG + PTEN + SIRT1 + SIRT6
03-Apr-2023 75 genes: + SP0535
24-Oct-2023 76 genes: + SERPINE1
22-Dec-2023 79 genes: + MC1R, FBXO32, TRIM63
12-Nov-2024 80 genes: + GRM1
07-Sep-2025 86 genes: + TPH2 + DRD4 + COMT + SLC6A4 + BDNF + NR3C1