ARVD1 = arrhythmogenic right ventricular dysplasia 1.

ARVD2 = arrhythmogenic right ventricular dysplasia 2.

ARVD3 = arrhythmogenic right ventricular dysplasia 3.

ARVD4 = arrhythmogenic right ventricular dysplasia 4.

ARVD5 = arrhythmogenic right ventricular dysplasia 5.

ARVD6 = arrhythmogenic right ventricular dysplasia 6.

ARVD7 = arrhythmogenic right ventricular dysplasia 7.

ARX = aristaless related homeobox.

AS = ankylosing spondylitis.

AS3MT = arsenic (+3 oxidation state) methyltransferase.

ASAH1 = N-acylsphingosine amidohydrolase1.

ASAH2 = N-acylsphingosine amidohydrolase 2.

ASAH2B = N-acylsphingosine amidohydrolase 2B.

ASAH2C = N-acylsphingosine amidohydrolase 2C.

ASAH3 = N-acylsphingosine amidohydrolase 3.

ASAH3L = N-acylsphingosine amidohydrolase 3-like.

ASAM = adipocyte-specific adhesion molecule.

ASAT = Anemia, sideroblastic, with spinocerebellar ataxia.

ASB1 = ankyrin repeat and SOCS box-containing 1.

ASB2 = ankyrin repeat and SOCS box-containing 2.

ASB3 = ankyrin repeat and SOCS box-containing 3.

ASB4 = ankyrin repeat and SOCS box-containing 4.

ASB5 = ankyrin repeat and SOCS box-containing 5.

ASB6 = ankyrin repeat and SOCS box-containing 6.

ASB7 = ankyrin repeat and SOCS box-containing 7.

ASB8 = ankyrin repeat and SOCS box-containing 8.

ASB9 = ankyrin repeat and SOCS box-containing 9.

ASB10 = ankyrin repeat and SOCS box-containing 10.

ASB11 = ankyrin repeat and SOCS box-containing 11.

ASB12 = ankyrin repeat and SOCS box-containing 12.

ASB13 = ankyrin repeat and SOCS box-containing 13.

ASB14 = ankyrin repeat and SOCS box-containing 14.

ASB15 = ankyrin repeat and SOCS box-containing 15.

ASB16 = ankyrin repeat and SOCS box-containing 16.

ASB17 = ankyrin repeat and SOCS box-containing 17.

ASB18 = ankyrin repeat and SOCS box-containing 18.

ASCC1 = activating signal cointegrator 1 complex subunit 1.

ASCC2 = activating signal cointegrator 1 complex subunit 2.

ASCC3 = activating signal cointegrator 1 complex subunit 3.

ASCC3L1 = activating signal cointegrator 1 complex subunit 3-like 1.

ASCL1 = achaete-scute complex homolog 1.

ASCL2 = achaete-scute complex homolog 2.

ASCL3 = achaete-scute complex homolog 3.

ASCL4 = achaete-scute complex homolog 4.

ASCL5 = achaete-scute complex homolog 5.

ASD1 = atrial septal defect 1.

ASF1A = ASF1 anti-silencing function 1 homolog A.

ASF1B = ASF1 anti-silencing function 1 homolog B.

ASFMR1 = antisense fragile X mental retardation protein.

ASGR1 = asialoglycoprotein receptor 1.

ASGR2 = asialoglycoprotein receptor 2.

ASH1L = ash1 (absent, small, or homeotic)-like.

ASH2L = ash2 (absent, small, or homeotic)-like.

ASH2LP1 = ash2 (absent, small, or homeotic)-like pseudogene 1.

ASIP = agouti signaling protein.

ASL = argininosuccinate lyase.

ASLL = argininosuccinate lyase-like

ASMD = anterior segment mesenchymal dysgenesis.

ASMT = acetylserotonin O-methyltransferase.

ASMTL = acetylserotonin O-methyltransferase-like.

ASMTY = acetylserotonin methyltransferase (Y chromosome).

ASNA1 = arsA arsenite transporter, ATP-binding, homolog 1.

ASNS = asparagine synthetase.

ASNSD1 = asparagine synthetase domain containing 1.

ASNSL1 = asparagine synthetase-like 1.

ASNSL2 = asparagine synthetase-like 2.

ASPA = aspartoacylase.

ASPG1 = Asperger syndrome, susceptibility to, 1.

ASPG2 = Asperger syndrome, susceptibility to, 2.

ASPG3 = Asperger syndrome, susceptibility to, 3.

ASPH = aspartate beta-hydroxylase.

ASPHD1 = aspartate beta-hydroxylase domain containing 1.

ASPHD2 = aspartate beta-hydroxylase domain containing 2.

ASPM = asp (abnormal spindle) homolog, microcephaly associated.

ASPN = asporin.

ASPRV1 = aspartic peptidase, retroviral-like 1.

ASPSCR1 = alveolar soft part sarcoma chromosome region, candidate 1.

ASRGL1 = asparaginase like 1.

ASS1 = argininosuccinate synthetase 1.

ASSP1 = argininosuccinate synthetase pseudogene 1.

ASSP2 = argininosuccinate synthetase pseudogene 2.

ASSP3 = argininosuccinate synthetase pseudogene 3.

ASSP4 = argininosuccinate synthetase pseudogene 4.

ASSP5 = argininosuccinate synthetase pseudogene 5.

ASSP6 = argininosuccinate synthetase pseudogene 6.

ASSP7 = argininosuccinate synthetase pseudogene 7.

ASSP8 = argininosuccinate synthetase pseudogene 8.

ASSP9 = argininosuccinate synthetase pseudogene 9.

ASSP10 = argininosuccinate synthetase pseudogene 10.

ASSP11 = argininosuccinate synthetase pseudogene 11.

ASSP12 = argininosuccinate synthetase pseudogene 12.

ASSP13 = argininosuccinate synthetase pseudogene 13.

ASSP14 = argininosuccinate synthetase pseudogene 14.

ASTE1 = asteroid 1.

ASTL = astacin-like metallo-endopeptidase.

ASTN1 = astrotactin 1.

ASTN2 = astrotactin 2.

ASVS1 = adenovirus/SV40 integration site 1

ASXL1 = additional sex combs like 1.

ASXL2 = additional sex combs like 2.

ASXL3 = additional sex combs like 3.

ASZ1 = ankyrin repeat, SAM and basic leucine zipper domain containing 1.

ATAD1 = ATPase family, AAA domain containing 1.

ATAD2 = ATPase family, AAA domain containing 2.

ATAD2B = ATPase family, AAA domain containing 2B.

ATAD3A = ATPase family, AAA domain containing 3A

ATAD3B = ATPase family, AAA domain containing 3B.

ATAD3C = ATPase family, AAA domain containing 3C.

ATAD4 = ATPase family, AAA domain containing 4.

ATAD5 = ATPase family, AAA domain containing 5.

ATCD1 = ATP synthase subunit C domain containing 1 pseudogene.

ATCAY = taxia, cerebellar, Cayman type.

ATD = asphixiating thoracic dystrophy.