Homozygous familial hypercholesterolemia

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Introduction

The LDLRAP1 gene, which stands for low-density lipoprotein receptor adaptor protein 1, is located on chromosome 1p36.11. It has 9 exons spanning 25 kb and encodes a 308 amino acid protein (1, 2). The LDLRAP1 gene encodes a cytosolic protein which interacts with the cytoplasmic tail of the LDL receptor (2).

Expressed in multiple tissues, including liver, a deficiency in this gene product leads to LDL receptor malfunction and cause autosomal recessive hypercholesterolemia (2).

Variant List

To see more information, click on the variant in the table. Hover on the Variant in the table to see its location on the gene. For more information on table headers, HGVS nomenclature, and Laboratory variant classification, please use the following links here.​

Gene Structure

Variant IDVariantAmino Acid ChangeGene SymbolTimes ObservedVariant TypeEffect TypeDisplay Variant ClassificationPMIDLocationPhenotypePresent in ClinVar
LDLRAP1_0001c.?Deletion (Exons 5-9)LDLRAP12Copy Number LossDeletionPathogenic37119068Exons 5-9Unknown
LDLRAP1_0002c.-17_-12dup5UTRLDLRAP11DuplicationUTRUncertain Significance28965616Exon 1No
LDLRAP1_0003c.1A>Cp.Met1?LDLRAP11SNVInitiator codonPathogenic30777337Exon 1No
LDLRAP1_0004c.1A>Gp.Met1?LDLRAP12SNVInitiator codonPathogenic29245109Exon 1Yes
LDLRAP1_0005c.1_2insGp.Met1?LDLRAP11InsertionInitiator codonPathogenic30777337Exon 1No
LDLRAP1_0006c.3G>Tp.Met1?LDLRAP11SNVInitiator codonPathogenic30777337Exon 1No
LDLRAP1_0008c.65G>Ap.Trp22*LDLRAP159SNVNonsensePathogenic11326085, 11897284, 14717060, Show More >>Exon 1Corneal arcus, xanthomas, coronary artery disease, peripheral vascular disease, Show More >>Yes
LDLRAP1_0007c.65G>Cp.Trp22SerLDLRAP11SNVMissenseUncertain Significance32073192Exon 1Yes
LDLRAP1_0009c.70G>Ap.Gly24SerLDLRAP11SNVMissenseLikely Benign27247956Exon 1Yes
LDLRAP1_0010c.70_71delp.Gly24Argfs*9LDLRAP14DeletionFrameshiftPathogenic12464675Exon 1No
LDLRAP1_0011c.71delp.Gly24Alafs*32LDLRAP16DeletionFrameshiftPathogenic11326085, 29396260, 30318064Exon 1Coronary artery disease, cabgNo
LDLRAP1_0012c.71dupp.Gly25Argfs*9LDLRAP14DuplicationFrameshiftPathogenic11326085, 15209474Exon 1Corneal arcus, xanthomas, angina, coronary artery diseaseNo
LDLRAP1_0013c.88+31C>AIntronicLDLRAP11SNVIntronicUncertain Significance35626767Intron 1No
LDLRAP1_0014c.89-1G>CIntronicLDLRAP17SNVSplice acceptorPathogenic15485476, 28432645, 28965616, Show More >>Intron 1Xanthomas, coronary artery disease, metabolic phenotype, myocardial infarctionYes
LDLRAP1_0015c.109G>Tp.Asp37TyrLDLRAP11SNVMissenseUncertain Significance27247956Exon 2No
LDLRAP1_0016c.113C>Tp.Thr38MetLDLRAP11SNVMissenseLikely Benign27247956Exon 2Yes
LDLRAP1_0017c.115C>Tp.Arg39TrpLDLRAP11SNVMissenseUncertain Significance32073192Exon 2Yes
LDLRAP1_0018c.122C>Tp.Thr41MetLDLRAP11SNVMissenseUncertain Significance27247956Exon 2Yes
LDLRAP1_0019c.143T>Cp.Phe48SerLDLRAP12SNVMissenseUncertain Significance30876877, 33640001Exon 2Corneal arcus, xanthomas, angina, coronary artery disease, myocardial infarction, peripheral vascular disease, strokeNo
LDLRAP1_0020c.152A>Tp.Lys51MetLDLRAP11SNVMissenseUncertain Significance16870701Exon 2No
LDLRAP1_0021c.167C>Tp.Thr56MetLDLRAP15SNVMissenseLikely Pathogenic20124734, 32073192Exon 2Yes
LDLRAP1_0022c.200C>Tp.Ser67LeuLDLRAP11SNVMissenseUncertain Significance36329474Exon 2No
LDLRAP1_0023c.205G>Ap.Ala69ThrLDLRAP11SNVMissenseLikely Benign27247956Exon 2Yes
LDLRAP1_0024c.207delp.Ala70Profs*19LDLRAP14DeletionFrameshiftPathogenic27578128, 29245109, 36769678Exon 2Corneal arcus, xanthomasNo
LDLRAP1_0025c.212T>Cp.Ile71ThrLDLRAP11SNVMissenseUncertain Significance27247956Exon 2No
LDLRAP1_0026c.213C>Gp.Ile71MetLDLRAP11SNVMissenseLikely Benign27247956Exon 2No
LDLRAP1_0027c.235A>Gp.Lys79GluLDLRAP11SNVMissenseUncertain Significance32073192Exon 3Yes
LDLRAP1_0028c.274G>Ap.Val92MetLDLRAP12SNVMissenseUncertain Significance30637778, 32073192Exon 3No
LDLRAP1_0029c.281C>Ap.Pro94GlnLDLRAP11SNVMissenseUncertain Significance36499307Exon 3Yes
LDLRAP1_0030c.284G>Ap.Arg95GlnLDLRAP11SNVMissenseLikely Benign32878475Exon 3Yes
LDLRAP1_0031c.344+1G>AIntronicLDLRAP13SNVSplice donorPathogenic28964736, 29396260Intron 3Yes
LDLRAP1_0032c.345-2A>GIntronicLDLRAP18SNVSplice acceptorPathogenic34425670Intron 3Xanthelasmas, xanthomas, Xanthelasmas, xanthomas, coronary artery disease, metabolic phenotype, myocardial infarctionNo
LDLRAP1_0033c.350C>Ap.Ser117TyrLDLRAP11SNVMissenseLikely Pathogenic20231386Exon 4No
LDLRAP1_0034c.359C>Tp.Thr120IleLDLRAP11SNVMissenseUncertain Significance27247956Exon 4No
LDLRAP1_0035c.374A>Gp.His125ArgLDLRAP11SNVMissenseUncertain Significance34998859Exon 4No
LDLRAP1_0036c.376G>Ap.Asp126AsnLDLRAP11SNVMissenseLikely Benign37848354Exon 4Yes
LDLRAP1_0037c.383T>Gp.Val128GlyLDLRAP12SNVMissenseUncertain Significance35187127Exon 4Corneal arcus, xanthomas, coronary artery diseaseNo
LDLRAP1_0038c.400C>Tp.Gln134*LDLRAP11SNVNonsenseLikely Pathogenic34629743Exon 4Yes
LDLRAP1_0039c.406C>Tp.Gln136*LDLRAP154SNVNonsensePathogenic10487776, 11326085, 12464675, Show More >>Exon 4Yes
LDLRAP1_0040c.413A>Gp.Asn138SerLDLRAP11SNVMissenseLikely Benign27247956Exon 4Yes
LDLRAP1_0041c.429C>Ap.Cys143*LDLRAP11SNVNonsenseLikely Pathogenic34629743Exon 4Yes
LDLRAP1_0042c.431dupp.His144Glnfs*27LDLRAP114DuplicationFrameshiftPathogenic26723464, 29245109, 34971394, Show More >>Exon 4Coronary artery disease, cabg, stroke, Xanthomas, coronary artery diseaseYes
LDLRAP1_0043c.432_433insAp.Ala145Serfs*26LDLRAP168InsertionFrameshiftPathogenic11326085, 11897284, 12535754, Show More >>Exon 4Corneal arcus, xanthomas, coronary artery disease, peripheral vascular disease, Show More >>Yes
LDLRAP1_0044c.448A>Gp.Lys150GluLDLRAP11SNVMissenseUncertain Significance16870701Exon 4No
LDLRAP1_0045c.449A>Tp.Lys150MetLDLRAP11SNVMissenseUncertain Significance16870701Exon 4No
LDLRAP1_0047c.451C>Gp.Arg151GlyLDLRAP11SNVMissenseLikely Benign27247956Exon 4No
LDLRAP1_0046c.451C>Tp.Arg151TrpLDLRAP11SNVMissenseUncertain Significance32073192Exon 4Yes
LDLRAP1_0048c.457A>Gp.Met153ValLDLRAP11SNVMissenseLikely Benign28965616Exon 4No
LDLRAP1_0049c.459+2T>CIntronicLDLRAP11SNVSplice donorLikely Pathogenic34629743Intron 4No
LDLRAP1_0050c.459+2T>GIntronicLDLRAP14SNVSplice donorPathogenic15599766Intron 4Yes
LDLRAP1_0051c.459+22G>TIntronicLDLRAP11SNVIntronicBenign15599766Intron 4Yes
LDLRAP1_0052c.460-1G>AIntronicLDLRAP12SNVSplice acceptorPathogenic37119068Intron 4Yes
LDLRAP1_0053c.467C>Tp.Ala156ValLDLRAP11SNVMissenseUncertain Significance27247956Exon 5Yes
LDLRAP1_0054c.487C>Tp.Gln163*LDLRAP11SNVNonsenseLikely Pathogenic34629743Exon 5Yes
LDLRAP1_0055c.488A>Cp.Gln163ProLDLRAP13SNVMissenseUncertain Significance31734096, 32073192Exon 5XanthomasNo
LDLRAP1_0056c.493T>Gp.Phe165ValLDLRAP11SNVMissenseLikely Pathogenic12221107Exon 5No
LDLRAP1_0057c.497A>Gp.Lys166ArgLDLRAP11SNVMissenseLikely Benign27247956Exon 5Yes
LDLRAP1_0058c.517C>Tp.Gln173*LDLRAP11SNVNonsenseLikely Pathogenic27247956Exon 5No
LDLRAP1_0059c.533-1G>AIntronicLDLRAP11SNVSplice acceptorLikely Pathogenic34629743Intron 5Yes
LDLRAP1_0060c.569G>Cp.Gly190AlaLDLRAP11SNVMissenseLikely Benign27247956Exon 6Yes
LDLRAP1_0061c.577dupp.Leu193Profs*28LDLRAP12DuplicationFrameshiftPathogenic15135266Exon 6
LDLRAP1_0062c.586delp.Arg196Alafs*8LDLRAP11DeletionFrameshiftPathogenic36980993Exon 6No
LDLRAP1_0063c.602_603dupp.Ser202Profs*3LDLRAP11DuplicationFrameshiftPathogenic29245109Exon 6No
LDLRAP1_0064c.603dupp.Ser202Leufs*19LDLRAP16DuplicationFrameshiftPathogenic28965616, 29245109, 35323704, Show More >>Exon 6Xanthelasmas, xanthomas, cardiac rhythm disorder, XanthomasNo
LDLRAP1_0065c.604delp.Ser202Profs*2LDLRAP11DeletionFrameshiftPathogenic29245109Exon 6Yes
LDLRAP1_0066c.604T>Cp.Ser202ProLDLRAP11SNVMissenseBenign12958046Exon 6Yes
LDLRAP1_0068c.604_605delinsAp.Ser202Thrfs*2LDLRAP14DelinsFrameshiftPathogenic30270081Exon 6Xanthomas, coronary artery diseaseNo
LDLRAP1_0067c.604_605delinsCAp.Ser202HisLDLRAP14DelinsMissenseUncertain Significance31153816, 35323704Exon 6Cardiovascular disease, coronary artery diseaseYes
LDLRAP1_0069c.605C>Ap.Ser202TyrLDLRAP16SNVMissenseUncertain Significance11326085, 28965616, 34297352Exon 6Yes
LDLRAP1_0071c.605C>Gp.Ser202CysLDLRAP11SNVMissenseLikely Benign32660911Exon 6No
LDLRAP1_0070c.605C>Tp.Ser202PheLDLRAP11SNVMissenseLikely Benign34629743Exon 6No
LDLRAP1_0072c.606dupp.Lys204Glufs*17LDLRAP15DuplicationFrameshiftPathogenic21872251, 22157599Exon 6Xanthomas, angina, coronary artery disease, Xanthomas, coronary artery diseaseNo
LDLRAP1_0073c.621dupp.Ala208Argfs*13LDLRAP13DuplicationFrameshiftPathogenic17761685Exon 7
LDLRAP1_0074c.622G>Ap.Ala208ThrLDLRAP11SNVMissenseLikely Benign27247956Exon 7Yes
LDLRAP1_0075c.626C>Tp.Thr209IleLDLRAP11SNVMissenseLikely Benign27247956Exon 7Yes
LDLRAP1_0076c.649G>Tp.Glu217*LDLRAP12SNVNonsensePathogenic34629743Exon 7Corneal arcus, xanthelasmas, xanthomas, coronary artery diseaseYes
LDLRAP1_0077c.653C>Tp.Thr218IleLDLRAP11SNVMissenseLikely Benign29245109Exon 7Yes
LDLRAP1_0078c.654A>Gp.Thr218=LDLRAP11SNVSilentBenign34629743Exon 7Yes
LDLRAP1_0079c.676G>Ap.Val226IleLDLRAP11SNVMissenseLikely Benign27247956Exon 7Yes
LDLRAP1_0080c.703G>Ap.Glu235LysLDLRAP11SNVMissenseLikely Benign27247956Exon 7Yes
LDLRAP1_0081c.711G>Ap.Pro237=LDLRAP11SNVSilentLikely Benign39380044Exon 7Yes
LDLRAP1_0082c.712C>Tp.Arg238TrpLDLRAP11SNVMissenseBenign15530918Exon 7Yes
LDLRAP1_0083c.713G>Ap.Arg238GlnLDLRAP11SNVMissenseLikely Benign27247956Exon 7Yes
LDLRAP1_0084c.722C>Ap.Ala241AspLDLRAP11SNVMissenseLikely Benign27247956Exon 7No
LDLRAP1_0085c.742G>Ap.Val248IleLDLRAP11SNVMissenseLikely Benign35626767Exon 7No
LDLRAP1_0086c.748-7C>GIntronicLDLRAP11SNVSplice regionUncertain Significance32660911Intron 7Yes
LDLRAP1_0087c.748-2A>GIntronicLDLRAP11SNVSplice acceptorPathogenic28965616Intron 7No
LDLRAP1_0088c.755A>Cp.Asp252AlaLDLRAP11SNVMissenseUncertain Significance15728179Exon 8No
LDLRAP1_0089c.758A>Cp.Asp253AlaLDLRAP11SNVMissenseUncertain Significance15728179Exon 8No
LDLRAP1_0090c.769G>Ap.Glu257LysLDLRAP11SNVMissenseUncertain Significance15728179Exon 8No
LDLRAP1_0091c.770A>Cp.Glu257AlaLDLRAP11SNVMissenseUncertain Significance15728179Exon 8No
LDLRAP1_0092c.779C>Tp.Ser260LeuLDLRAP11SNVMissenseUncertain Significance27247956Exon 8No
LDLRAP1_0093c.784C>Tp.Leu262PheLDLRAP11SNVMissenseUncertain Significance24798335Exon 9No
LDLRAP1_0094c.811G>Ap.Val271IleLDLRAP11SNVMissenseLikely Benign27247956Exon 9Yes
LDLRAP1_0095c.842T>Cp.Met281ThrLDLRAP11SNVMissenseLikely Benign32073192Exon 9Yes
LDLRAP1_0096c.850G>Ap.Ala284ThrLDLRAP11SNVMissenseLikely Benign27247956Exon 9Yes
LDLRAP1_0097c.856T>Gp.Cys286GlyLDLRAP11SNVMissenseLikely Benign27247956Exon 9No
LDLRAP1_0098c.863C>Tp.Ser288LeuLDLRAP12SNVMissenseUncertain Significance29245109, 32073192Exon 9Yes
LDLRAP1_0099c.875G>Tp.Trp292LeuLDLRAP11SNVMissenseUncertain Significance27247956Exon 9No
LDLRAP1_0100c.888C>Gp.Asp296GluLDLRAP11SNVMissenseLikely Benign28965616Exon 9No
LDLRAP1_0101c.896G>Ap.Gly299AspLDLRAP11SNVMissenseLikely Benign28965616Exon 9No
LDLRAP1_0102c.907G>Ap.Asp303AsnLDLRAP11SNVMissenseLikely Benign27247956Exon 9Yes
LDLRAP1_0103c.910G>Tp.Asp304TyrLDLRAP11SNVMissenseUncertain Significance27247956Exon 9No
LDLRAP1_0104c.(?_-93)_(747+1_748-1)delDeletion (Exons 1-7)LDLRAP12Copy Number LossDeletionPathogenic15135266Exons 1-7, Introns 1-7Unknown
LDLRAP1_0105c.(532+1_533-1)_(*1894_?)delDeletion (Exons 6-9)LDLRAP11Copy Number LossDeletionLikely Pathogenic17761685Exons 6-9, Introns 5-9Unknown
LDLRAP1_0106c.(88+1_89-1)_(747+1_748-1)delDeletion (Exons 2-7)LDLRAP12Copy Number LossDeletionLikely Pathogenic17761685Exons 2-7, Introns 1-7Unknown
LDLRAP1_0107c.345-195_459+1298delDeletion (Exon 4)LDLRAP18Copy Number LossDeletionPathogenic17686643Exon 4, Introns 3-4XanthomasUnknown
LDLRAP1_0108c.(344+1_345-1)_(459+1_460-1)delDeletion (Exon 4)LDLRAP18Copy Number LossDeletionPathogenic27578128, 29245109Exon 4, Introns 3-4Unknown
LDLRAP1_0109c.(88+1_89-1)insN[2600]IntronicLDLRAP12InsertionUnknownPathogenic12417523Intron 1Unknown
LDLRAP1_0110c.?p.Thr38fsLDLRAP11FrameshiftLikely Pathogenic34629743Exon 2Unknown
LDLRAP1_0111c.?p.Asp37*LDLRAP11NonsenseLikely Pathogenic27247956Exon 2Unknown
LDLRAP1_0112c.?p.Phe48*LDLRAP11NonsenseLikely Pathogenic27247956Exon 2Unknown
LDLRAP1_0113c.?p.Leu90fsLDLRAP11FrameshiftLikely Pathogenic34629743Exon 3Unknown
LDLRAP1_0114c.?p.Ser135fsLDLRAP11FrameshiftLikely Pathogenic34629743Exon 4Unknown
LDLRAP1_0115c.?p.Phe165AlaLDLRAP11MissenseLikely Pathogenic20231386Exon 5Unknown
LDLRAP1_0116c.?p.Phe171LeuLDLRAP11MissenseLikely Benign27247956Exon 5Unknown
LDLRAP1_0117c.?p.Asp191fsLDLRAP11FrameshiftLikely Pathogenic34629743Exon 6Unknown
LDLRAP1_0118c.?p.Glu180fsLDLRAP11FrameshiftLikely Pathogenic34629743Exon 6Unknown
LDLRAP1_0119c.?p.Leu193fsLDLRAP11FrameshiftPathogenic15135266Exon 6Unknown
LDLRAP1_0120c.?p.Ser202*LDLRAP11NonsenseLikely Pathogenic27247956Exon 6Unknown
LDLRAP1_0121c.?p.Cys199AlaLDLRAP11MissenseUncertain Significance23564733Exon 6Unknown
LDLRAP1_0122c.?p.Ser202SerLDLRAP11MissenseUncertain Significance20124734Exon 6Unknown
LDLRAP1_0123c.?p.Ala208fsLDLRAP11FrameshiftPathogenic12464675Exon 7Unknown
LDLRAP1_0124c.?p.Thr225*LDLRAP11NonsenseLikely Pathogenic27247956Exon 7Unknown
LDLRAP1_0125c.?p.Arg238TyrLDLRAP11MissenseUncertain Significance34998859Exon 7Unknown
LDLRAP1_0126c.?p.Glu235AspLDLRAP11MissenseLikely Benign27247956Exon 7Unknown
LDLRAP1_0127c.?p.Leu212AlaLDLRAP11MissenseUncertain Significance16179341Exon 7Unknown
LDLRAP1_0128c.?p.Leu213AlaLDLRAP11MissenseUncertain Significance16179341Exon 7Unknown
LDLRAP1_0129c.?p.Arg261AlaLDLRAP11MissenseUncertain Significance15728179Exon 8Unknown
LDLRAP1_0130c.?p.Phe259AlaLDLRAP11MissenseLikely Pathogenic15728179Exon 8Unknown
LDLRAP1_0131c.?p.Phe259LeuLDLRAP11MissenseUncertain Significance27247956Exon 8Unknown
LDLRAP1_0132c.?p.Arg266AlaLDLRAP11MissenseLikely Pathogenic15728179Exon 9Unknown
LDLRAP1_0133c.?p.Cys286AlaLDLRAP11MissenseUncertain Significance23564733Exon 9Unknown
LDLRAP1_0134c.?p.Leu262AlaLDLRAP11MissenseUncertain Significance15728179Exon 9Unknown
LDLRAP1_0135c.?p.Leu262GluLDLRAP11MissenseUncertain Significance24798335Exon 9Unknown
LDLRAP1_0136c.?p.Leu262TyrLDLRAP11MissenseUncertain Significance24798335Exon 9Unknown
LDLRAP1_0137c.(-93_1894)insN[2600]p.?LDLRAP11InsertionUnknownUncertain Significance27084339UnknownUnknown
LDLRAP1_0138c.(?_-93)_(88+1_89-1)dupGain (Exon 1)LDLRAP11Copy Number GainDuplicationUncertain Significance32041611Exon 1, Intron 1Unknown
LDLRAP1_0139c.(88+1_89-1)insN[?]IntronicLDLRAP11InsertionUnknownUncertain Significance12642779Intron 1Unknown
    Notes:
  • Click the PMID number to go to the corresponding publication.
  • All variants are referencing NM_015627.3 and there is no change between these versions with respect to the coding sequence.
  • Genomic coordinates are calculated based on variant data provided: in some cases coordinates are estimated in order to allow users to sort the variants linearly, by approximation.
  • Click the Present in ClinVar link to go to the corresponding ClinVar VariationID.
  • Don’t see a variant of interest? Contribute data through the Register Variant form.
  • Explore considerations about Variants of Uncertain Significance (VUS)

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