Roger E. Stevenson, M.D., is a senior clinical geneticist and founder of the Greenwood Genetic Center. Charles E. Schwartz, Ph.D., is the Director of Research and Head of J.C. Self Research Institute at the Greenwood Genetic Center. R. Curtis Rogers, M.D., is a senior clinical geneticist at the Greenwood Genetic Center.

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• Aarskog Syndrome ; Abidi Syndrome ; Adrenoleukodystrophy ; Ahmad Syndrome ; Aicardi Syndrome ; Allan-Herndon-Dudley Syndrome ; Alpha-Thalassemia Intellectual Disability (see also ATRX-Associated XLID) ; AP1S2-Associated XLID ; Apak Ataxia-Spastic Diplegia Syndrome ; Arena Syndrome (see Pelizaeus-Merzbacher Syndrome) ; Armfield Syndrome ; Arts Syndrome ; ARX-Associated XLID ; Ataxia-Deafness-Dementia, X-linked ; Atkin-Flaitz Syndrome ; ATRX-Associated XLID ; Bergia Cardiomyopathy ; Bertini Syndrome ; Borjeson-Forssman-Lehmann Syndrome ; Branchial Arch Syndrome, X-Linked ; Cantu Syndrome ; Carpenter-Waziri Syndrome (see also ATRX-Associated XLID) ; Cerebro-Cerebello-Coloboma Syndrome ; Cerebro-Oculo-Genital Syndrome ; Cerebro-Palato-Cardiac Syndrome (see also Renpenning Syndrome) ; Charcot-Marie-Tooth Neuropathy, Cowchock Variant ; Charcot-Marie-Tooth Neuropathy, Ionasescu Variant ; Chassaing-Lacombe Chondrodysplasia ; Christian Syndrome ; Christianson Syndrome ; Chudley-Lowry Syndrome (see also ATRX-Associated XLID) ; CK Syndrome ; Clark-Baraitser Syndrome ; Coffin-Lowry Syndrome ; Cornelia de Lange Syndrome, X-Linked ; Craniofacioskeletal ; Duchenne Muscular Dystrophy ; Dyskeratosis Congenita ; Epilepsy-Intellectual Disability in Females ; Fitzsimmons Syndrome ; FLNA-Associated XLID ; Fragile X Syndrome ; Giuffre-Tsukahara Syndrome ; Glycerol Kinase Deficiency ; Golabi-Ito-Hall Syndrome (see also Renpenning Syndrome) ; Goldblatt Spastic Paraplegia Syndrome ; Goltz Syndrome ; Graham Anophthalmia Syndrome ; Gustavson Syndrome ; Hall Orofacial Syndrome ; Hereditary Bullous Dystrophy, X-Linked ; Holmes-Gang Syndrome (see also ATRX-Associated XLID) ; Homfray Seizures-Contractures ; Hyde-Forster Syndrome ; Hydranencephaly with Abnormal Genitalia ; Hydrocephaly-Cerebellar Agenesis Syndrome ; Hydrocephaly-MASA Spectrum ; Hypoparathyroidism, X-Linked ; Incontinentia Pigmenti ; Juberg-Marsidi-Brooks ; Kang Syndrome ; Lenz Microphthalmia Syndrome ; Lesch-Nyhan Syndrome ; Lissencephaly and Abnormal Genitalia, X-Linked (see also ARX-Associated XLID) ; Lissencephaly, X-Linked ; Lowe Syndrome ; Lujan Syndrome ; MEHMO Syndrome ; Menkes Syndrome ; MIDAS Syndrome ; Miles-Carpenter Syndrome ; Mohr-Tranebjaerg Syndrome ; Monoamine Oxidase-A Deficiency ; Mucopolysaccharidosis IIA ; Myotubular Myopathy ; Nance-Horan Syndrome ; Norrie Disease ; Optic Atrophy, X-Linked ; Opitz FG Syndrome ; Oral-Facial-Digital Syndrome I ; Ornithine Transcarbamoylase Deficiency ; Otopalatodigital Syndrome I (see also FLNA-Associated XLID) ; Otopalatodigital Syndrome II (see also FLNA-Associated XLID) ; Paine Syndrome ; Pallister W Syndrome ; Partington Syndrome (see also ARX-Associated XLID) ; Pelizaeus-Merzbacher Syndrome ; Periventricular Nodular Heterotopia (see also FLNA-Associated XLID) ; Pettigrew Syndrome ; Phosphoglycerate Kinase Deficiency ; Plott Syndrome ; Porteous Syndrome (see also Renpenning Syndrome) ; PPM-X ; Prieto Syndrome ; Proud Syndrome (see also ARX-Associated XLID) ; Pyruvate Dehydrogenase Deficiency ; Renpenning Syndrome ; Rett Syndrome ; Rett-like Seizures-Hypotonia ; Roifman Syndrome ; Say-Meyer Syndrome ; Schimke Syndrome ; Shashi Syndrome ; Shrimpton Syndrome ; Simpson-Golabi-Behmel Syndrome ; Smith-Fineman-Myers Syndrome ; Snyder-Robinson Syndrome ; Stocco dos Santos Syndrome ; Stoll Syndrome ; Sutherland-Haan Syndrome (see also Renpenning Syndrome) ; Telecanthus-Hypospadias Syndrome ; Turner XLID ; Urban Syndrome ; VACTERL-Hydrocephalus Syndrome ; Vasquez Syndrome ; Waisman-Laxova Syndrome ; Warkany Syndrome ; Wieacker-Wolff Syndrome ; Wilson-Turner Syndrome ; Wittwer Syndrome ; XLID-Agenesis of the Corpus Callosum ; XLID-Arch Fingerprints-Hypotonia Syndrome (see also ATRX-Associated XLID) ; XLID-Ataxia-Apraxia ; XLID-Ataxia-Dementia ; XLID-Blindness-Seizures-Spasticity ; XLID-Choreoathetosis ; XLID-Choroideremia-Ectodermal Dysplasia ; XLID-Cleft Lip/Cleft Palate ; XLID-Epilepsy (XIDE) ; XLID-Hydrocephaly-Basal Ganglia Calcifications (see also AP1S2-Associated XLID) ; XLID-Hypogammaglobulinemia ; XLID-Hypogonadism-Tremor ; XLID-Hypospadias ; XLID-Hypotonia-Recurrent Infections ; XLID-Ichthyosis-Hypogonadism ; XLID-Infantile Spasms (see also ARX-Associated XLID) ; XLID-Isolated Growth Hormone Deficiency ; XLID-Macrocephaly ; XLID-Macrocephaly-Macroorchidism ; XLID-Microcephaly-Testicular Failure ; XLID-Nail Dystrophy-Seizures ; XLID-Nystagmus-Seizures ; XLID-Optic Atrophy ; XLID-Panhypopituitarism ; XLID-Precocious Puberty ; XLID-Psoriasis ; XLID-Retinitis Pigmentosa ; XLID-Rolandic Seizures ; XLID-Spastic Paraplegia, Type 7 ; XLID-Spastic Paraplegia-Athetosis ; XLID-Spondyloepimetaphyseal Dysplasia ; XLID-Thyroid Aplasia-Cutis Verticis Gyrata ; XLID-Thyroxine-Binding Globulin Deficiency ; Young-Hughes Syndrome ; Appendices ; I. Genes Involved in X-Linked Intellectual Disability (by order of discovery) ; II. XLID Syndromes with Microcephaly ; III. XLID Syndromes with Macrocephaly ; IV. XLID Syndromes with Ocular Anomalies and/or Visual Impairment ; V. XLID Syndrome with Hearing Loss ; VI. XLID Syndromes with Facial Clefting ; VII. XLID Syndromes with Cardiac Malformations or other Cardiovascular Abnormalities ; VIII. XLID Syndromes with Urogenital Anomalies ; IX. XLID Syndromes with Neuronal Migration Disturbance ; X. XLID Syndromes with Spastic Paraplegia ; XI. XLID Syndromes with Seizures ; XII. XLID Syndromes with Hypotonia ; XIII. XLID Syndromes Predominately Affecting Females ; XIV. Duplication of XLID Genes and Regions of the X Chromosome Genome ; XV. Non-Syndromal XLID Families ; XVI. X-Inactivation in Heterozygous Females

Roger E. Stevenson, M.D., is a senior clinical geneticist and founder of the Greenwood Genetic Center. Charles E. Schwartz, Ph.D., is the Director of Research and Head of J.C. Self Research Institute at the Greenwood Genetic Center. R. Curtis Rogers, M.D., is a senior clinical geneticist at the Greenwood Genetic Center.

Select Guide Rating

• Aarskog Syndrome ; Abidi Syndrome ; Adrenoleukodystrophy ; Ahmad Syndrome ; Aicardi Syndrome ; Allan-Herndon-Dudley Syndrome ; Alpha-Thalassemia Intellectual Disability (see also ATRX-Associated XLID) ; AP1S2-Associated XLID ; Apak Ataxia-Spastic Diplegia Syndrome ; Arena Syndrome (see Pelizaeus-Merzbacher Syndrome) ; Armfield Syndrome ; Arts Syndrome ; ARX-Associated XLID ; Ataxia-Deafness-Dementia, X-linked ; Atkin-Flaitz Syndrome ; ATRX-Associated XLID ; Bergia Cardiomyopathy ; Bertini Syndrome ; Borjeson-Forssman-Lehmann Syndrome ; Branchial Arch Syndrome, X-Linked ; Cantu Syndrome ; Carpenter-Waziri Syndrome (see also ATRX-Associated XLID) ; Cerebro-Cerebello-Coloboma Syndrome ; Cerebro-Oculo-Genital Syndrome ; Cerebro-Palato-Cardiac Syndrome (see also Renpenning Syndrome) ; Charcot-Marie-Tooth Neuropathy, Cowchock Variant ; Charcot-Marie-Tooth Neuropathy, Ionasescu Variant ; Chassaing-Lacombe Chondrodysplasia ; Christian Syndrome ; Christianson Syndrome ; Chudley-Lowry Syndrome (see also ATRX-Associated XLID) ; CK Syndrome ; Clark-Baraitser Syndrome ; Coffin-Lowry Syndrome ; Cornelia de Lange Syndrome, X-Linked ; Craniofacioskeletal ; Duchenne Muscular Dystrophy ; Dyskeratosis Congenita ; Epilepsy-Intellectual Disability in Females ; Fitzsimmons Syndrome ; FLNA-Associated XLID ; Fragile X Syndrome ; Giuffre-Tsukahara Syndrome ; Glycerol Kinase Deficiency ; Golabi-Ito-Hall Syndrome (see also Renpenning Syndrome) ; Goldblatt Spastic Paraplegia Syndrome ; Goltz Syndrome ; Graham Anophthalmia Syndrome ; Gustavson Syndrome ; Hall Orofacial Syndrome ; Hereditary Bullous Dystrophy, X-Linked ; Holmes-Gang Syndrome (see also ATRX-Associated XLID) ; Homfray Seizures-Contractures ; Hyde-Forster Syndrome ; Hydranencephaly with Abnormal Genitalia ; Hydrocephaly-Cerebellar Agenesis Syndrome ; Hydrocephaly-MASA Spectrum ; Hypoparathyroidism, X-Linked ; Incontinentia Pigmenti ; Juberg-Marsidi-Brooks ; Kang Syndrome ; Lenz Microphthalmia Syndrome ; Lesch-Nyhan Syndrome ; Lissencephaly and Abnormal Genitalia, X-Linked (see also ARX-Associated XLID) ; Lissencephaly, X-Linked ; Lowe Syndrome ; Lujan Syndrome ; MEHMO Syndrome ; Menkes Syndrome ; MIDAS Syndrome ; Miles-Carpenter Syndrome ; Mohr-Tranebjaerg Syndrome ; Monoamine Oxidase-A Deficiency ; Mucopolysaccharidosis IIA ; Myotubular Myopathy ; Nance-Horan Syndrome ; Norrie Disease ; Optic Atrophy, X-Linked ; Opitz FG Syndrome ; Oral-Facial-Digital Syndrome I ; Ornithine Transcarbamoylase Deficiency ; Otopalatodigital Syndrome I (see also FLNA-Associated XLID) ; Otopalatodigital Syndrome II (see also FLNA-Associated XLID) ; Paine Syndrome ; Pallister W Syndrome ; Partington Syndrome (see also ARX-Associated XLID) ; Pelizaeus-Merzbacher Syndrome ; Periventricular Nodular Heterotopia (see also FLNA-Associated XLID) ; Pettigrew Syndrome ; Phosphoglycerate Kinase Deficiency ; Plott Syndrome ; Porteous Syndrome (see also Renpenning Syndrome) ; PPM-X ; Prieto Syndrome ; Proud Syndrome (see also ARX-Associated XLID) ; Pyruvate Dehydrogenase Deficiency ; Renpenning Syndrome ; Rett Syndrome ; Rett-like Seizures-Hypotonia ; Roifman Syndrome ; Say-Meyer Syndrome ; Schimke Syndrome ; Shashi Syndrome ; Shrimpton Syndrome ; Simpson-Golabi-Behmel Syndrome ; Smith-Fineman-Myers Syndrome ; Snyder-Robinson Syndrome ; Stocco dos Santos Syndrome ; Stoll Syndrome ; Sutherland-Haan Syndrome (see also Renpenning Syndrome) ; Telecanthus-Hypospadias Syndrome ; Turner XLID ; Urban Syndrome ; VACTERL-Hydrocephalus Syndrome ; Vasquez Syndrome ; Waisman-Laxova Syndrome ; Warkany Syndrome ; Wieacker-Wolff Syndrome ; Wilson-Turner Syndrome ; Wittwer Syndrome ; XLID-Agenesis of the Corpus Callosum ; XLID-Arch Fingerprints-Hypotonia Syndrome (see also ATRX-Associated XLID) ; XLID-Ataxia-Apraxia ; XLID-Ataxia-Dementia ; XLID-Blindness-Seizures-Spasticity ; XLID-Choreoathetosis ; XLID-Choroideremia-Ectodermal Dysplasia ; XLID-Cleft Lip/Cleft Palate ; XLID-Epilepsy (XIDE) ; XLID-Hydrocephaly-Basal Ganglia Calcifications (see also AP1S2-Associated XLID) ; XLID-Hypogammaglobulinemia ; XLID-Hypogonadism-Tremor ; XLID-Hypospadias ; XLID-Hypotonia-Recurrent Infections ; XLID-Ichthyosis-Hypogonadism ; XLID-Infantile Spasms (see also ARX-Associated XLID) ; XLID-Isolated Growth Hormone Deficiency ; XLID-Macrocephaly ; XLID-Macrocephaly-Macroorchidism ; XLID-Microcephaly-Testicular Failure ; XLID-Nail Dystrophy-Seizures ; XLID-Nystagmus-Seizures ; XLID-Optic Atrophy ; XLID-Panhypopituitarism ; XLID-Precocious Puberty ; XLID-Psoriasis ; XLID-Retinitis Pigmentosa ; XLID-Rolandic Seizures ; XLID-Spastic Paraplegia, Type 7 ; XLID-Spastic Paraplegia-Athetosis ; XLID-Spondyloepimetaphyseal Dysplasia ; XLID-Thyroid Aplasia-Cutis Verticis Gyrata ; XLID-Thyroxine-Binding Globulin Deficiency ; Young-Hughes Syndrome ; Appendices ; I. Genes Involved in X-Linked Intellectual Disability (by order of discovery) ; II. XLID Syndromes with Microcephaly ; III. XLID Syndromes with Macrocephaly ; IV. XLID Syndromes with Ocular Anomalies and/or Visual Impairment ; V. XLID Syndrome with Hearing Loss ; VI. XLID Syndromes with Facial Clefting ; VII. XLID Syndromes with Cardiac Malformations or other Cardiovascular Abnormalities ; VIII. XLID Syndromes with Urogenital Anomalies ; IX. XLID Syndromes with Neuronal Migration Disturbance ; X. XLID Syndromes with Spastic Paraplegia ; XI. XLID Syndromes with Seizures ; XII. XLID Syndromes with Hypotonia ; XIII. XLID Syndromes Predominately Affecting Females ; XIV. Duplication of XLID Genes and Regions of the X Chromosome Genome ; XV. Non-Syndromal XLID Families ; XVI. X-Inactivation in Heterozygous Females