XomeDxSlice Tool

Now Available - NEW XomeDxSlice Xpanded – Custom slice testing with trio analysis for lists >150 genes.



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Horizontal nystagmus

Select all: Gene symbolChrAvg % covered at 10xLocus TypeNoteOMIMPrevious symbol(s)Phenotype(s)Slice(s)
ALG13Xq2399.95%gene with protein product300776GLT28D1, CXorf45Abnormality of extrapyramidal motor function; Anteverted nares; Cerebral atrophy; Delayed myelination; Generalized hypotonia; Global developmental delay; Hepatomegaly; Horizontal nystagmus; Hypertelorism; Hypsarrhythmia; Infantile onset; Infantile spasms; Intellectual disability; Intellectual disability, severe; Long philtrum; Low-set ears; Microcephaly; Optic atrophy; Poor eye contact; Recurrent infections; Seizures; Type I transferrin isoform profile; X-linked dominant inheritance; X-linked recessive inheritance
CACNA1G17q21.33100%gene with protein product604065Autosomal dominant inheritance; Cerebellar atrophy; Cognitive impairment; Depressivity; Diplopia; Horizontal nystagmus; Loss of Purkinje cells in the cerebellar vermis; Slow progression; Spastic ataxia; Unsteady gait
DAB11p32.2100%gene with protein product603448Abnormal conjugate eye movement; Ataxia; Autosomal dominant inheritance; Cerebellar vermis atrophy; Cogwheel rigidity; Diffuse cerebellar atrophy; Dysarthria; Dysdiadochokinesis; Falls; Frequent falls; Horizontal nystagmus; Limb dysmetria; Myoclonus; Scanning speech; Sensorineural hearing impairment; Sensory impairment; Slow progression; Tremor; Truncal ataxia; Unsteady gait
DNM1L12p11.2199.96%gene with protein product603850Abnormal pyramidal signs; Areflexia; Autosomal dominant inheritance; Autosomal recessive inheritance; Central scotoma; Cerebral atrophy; Death in infancy; Decreased fetal movement; Deeply set eye; Failure to thrive; Feeding difficulties; Generalized hypotonia; Global developmental delay; Horizontal nystagmus; Lactic acidosis; Microcephaly; Oculomotor apraxia; Optic atrophy; Pointed chin; Progressive; Slow decrease in visual acuity; Strabismus; Tritanomaly; Variable expressivity
FRMD7Xq26.299.76%gene with protein product300628NYS, NYS1Congenital nystagmus; Heterogeneous; Horizontal nystagmus; Infantile onset; Pendular nystagmus; Reduced visual acuity; X-linked dominant inheritance; X-linked recessive inheritance
GBA1q2299.84%gene with protein productIncluded in this XomeDxSlice test, but please note that many disease alleles are not detectable by XomeDxSlice.606463GLUCAbdominal pain; Abnormal aortic arch morphology; Abnormal pattern of respiration; Adult onset; Akinesia; Anemia; Anorexia; Anteverted nares; Aortic valve calcification; Apathy; Apnea; Arthrogryposis multiplex congenita; Ascites; Aseptic necrosis; Ataxia; Autosomal recessive inheritance; Bone pain; Bruising susceptibility; Bulbar signs; Calcification of the aorta; Cardiomegaly; Cerebral atrophy; Congenital nonbullous ichthyosiform erythroderma; Cough; Death in infancy; Decreased beta-glucocerebrosidase protein and activity; Decreased body weight; Decreased fetal movement; Delayed puberty; Delayed skeletal maturation; Dementia; Depressed nasal bridge; Depressivity; Desquamation of skin soon after birth; Dysphagia; Dyspnea; Dystonia; Ectropion; Encephalopathy; Epistaxis; Erlenmeyer flask deformity of the femurs; Esotropia; Everted lower lip vermilion; Everted upper lip vermilion; Failure to thrive; Fatigue; Feeding difficulties; Fetal akinesia sequence; Flexion contracture; Gait disturbance; Generalized myoclonic seizures; Gingival bleeding; Global developmental delay; Hearing impairment; Hepatic failure; Hepatomegaly; High palate; Horizontal nystagmus; Horizontal supranuclear gaze palsy; Hydrocephalus; Hydrops fetalis; Hyperkeratosis; Hyperpigmentation of the skin; Hyperreflexia; Hypersplenism; Hypertelorism; Hypertonia; Hypokinesia; Hypometric horizontal saccades; Increased antibody level in blood; Increased bone mineral density; Increased susceptibility to fractures; Interstitial pulmonary abnormality; Intracranial hemorrhage; Intrauterine growth retardation; Kyphosis; Low-set ears; Low-set, posteriorly rotated ears; Macular atrophy; Microcephaly; Micrognathia; Microtia; Mitral valve calcification; Motor delay; Multiple myeloma; Muscular hypotonia; Myoclonus; Narrow mouth; Neonatal death; Neurological speech impairment; Nonimmune hydrops fetalis; Oculomotor apraxia; Opacification of the corneal stroma; Open mouth; Ophthalmoplegia; Opisthotonus; Osteolysis; Osteopenia; Pancytopenia; Pathologic fracture; Pes cavus; Petechiae; Phenotypic variability; Polyhydramnios; Premature birth; Progressive neurologic deterioration; Protuberant abdomen; Pulmonary arterial hypertension; Recurrent aspiration pneumonia; Recurrent respiratory infections; Respiratory distress; Reticular hyperpigmentation; Retrognathia; Rigidity; Seizures; Short nose; Short stature; Slowed horizontal saccades; Spastic paraparesis; Spasticity; Splenomegaly; Stillbirth; Strabismus; Supranuclear ophthalmoplegia; Thoracic hypoplasia; Thrombocytopenia; Triangular face; Trismus; Vascular calcification; Ventriculomegaly; Vertebral compression fracturesPalmoplantar keratoderma plus congenital ichthyosis
GPR143Xp22.296.98%gene with protein product300808OA1Abnormal pupil morphology; Amblyopia; Astigmatism; Depigmented fundus; Freckling; Giant melanosomes in melanocytes; Horizontal nystagmus; Hyperopic astigmatism; Hypoplasia of the fovea; Nystagmus; Nystagmus-induced head nodding; Ocular albinism; Photophobia; Strabismus; Visual impairment; X-linked inheritanceAlbinism ; Palmoplantar keratoderma plus congenital ichthyosis
GRM16q24.3100%gene with protein product604473Abnormal pyramidal signs; Autosomal recessive inheritance; Cerebellar atrophy; Dysarthria; Dysdiadochokinesis; Dysmetria; Esotropia; Generalized hypotonia; Global developmental delay; Horizontal nystagmus; Hyperreflexia; Hypometric saccades; Infantile onset; Inferior vermis hypoplasia; Intellectual disability; Pes planus; Ptosis; Retrocerebellar cyst; Short stature; Slow progression; Tremor; Ventriculomegaly
HARS5q31.3100%gene with protein product142810USH3BAbnormal cochlea morphology; Abnormal electroretinogram; Absent Achilles reflex; Astigmatism; Ataxia; Autosomal dominant inheritance; Autosomal recessive inheritance; Cataract; Delayed gross motor development; Distal sensory impairment; Hammertoe; Hearing impairment; Hemianopia; High hypermetropia; Horizontal nystagmus; Iris hypopigmentation; Nyctalopia; Optic disc pallor; Pes cavus; Photophobia; Scotoma; Sensorineural hearing impairment; Steppage gait; Truncal ataxia; Variable expressivity; Vestibular hypofunction; Visual impairment; Visual lossDisorders of Sex Development
KCNV29p24.2100%gene with protein product607604Astigmatism; Autosomal recessive inheritance; Cone/cone-rod dystrophy; Horizontal nystagmus; Myopia; Nyctalopia; Photophobia; Scotoma
KIF1C17p13.2100%gene with protein product603060SAX2Abnormality of the cerebral white matter; Autosomal recessive inheritance; Babinski sign; Chorea; Clonus; Distal amyotrophy; Dysarthria; Dysmetria; Erratic myoclonus; Fasciculations; Frequent falls; Gait ataxia; Head titubation; Horizontal nystagmus; Hyperreflexia; Hypodontia; Lower limb hyperreflexia; Microcephaly; Peripheral demyelination; Progressive; Short stature; Spastic ataxia; Spasticity; Titubation
KIF1C17p13.2100%gene with protein product603060SAX2Abnormality of the cerebral white matter; Autosomal recessive inheritance; Babinski sign; Chorea; Clonus; Distal amyotrophy; Dysarthria; Dysmetria; Erratic myoclonus; Fasciculations; Frequent falls; Gait ataxia; Head titubation; Horizontal nystagmus; Hyperreflexia; Hypodontia; Lower limb hyperreflexia; Microcephaly; Peripheral demyelination; Progressive; Short stature; Spastic ataxia; Spasticity; Titubation
LARGE122q12.3100%gene with protein productFormer name = LARGE603590LARGEAbnormal aldolase level; Abnormal lactate dehydrogenase activity; Abnormal levels of creatine kinase in blood; Abnormality of neuronal migration; Abnormality of the periventricular white matter; Abnormality of the voice; Absent septum pellucidum; Achilles tendon contracture; Agenesis of corpus callosum; Anal atresia; Anophthalmia; Aplasia/Hypoplasia involving the skeletal musculature; Areflexia; Atresia of the external auditory canal; Autosomal recessive inheritance; Babinski sign; Blindness; Buphthalmos; Cataract; Cerebellar dysplasia; Cerebellar hypoplasia; Chorioretinal dysplasia; Cleft palate; Cleft upper lip; Cognitive impairment; Coloboma; Congenital contracture; Congenital muscular dystrophy; Corneal opacity; Cryptorchidism; Dandy-Walker malformation; Decreased light- and dark-adapted electroretinogram amplitude; EEG abnormality; Elbow flexion contracture; Elevated serum creatine phosphokinase; EMG abnormality; EMG: myopathic abnormalities; Excessive daytime sleepiness; Facial palsy; Flexion contracture; Gait disturbance; Generalized hypotonia; Glaucoma; Global developmental delay; Heterogeneous; Horizontal nystagmus; Hydrocephalus; Hypertonia; Hypoplasia of penis; Hypoplasia of the brainstem; Hypoplasia of the corpus callosum; Hypoplasia of the pons; Hypoplastic male external genitalia; Hyporeflexia; Infantile onset; Intellectual disability; Intellectual disability, profound; Intellectual disability, severe; Joint contracture of the hand; Lissencephaly; Lower limb hyperreflexia; Macrocephaly; Macroglossia; Macrogyria; Megalocornea; Meningoencephalocele; Metatarsus valgus; Microcephaly; Microphthalmia; Microtia; Motor delay; Muscle weakness; Muscular dystrophy; Muscular hypotonia; Myopathy; Myopia; Neurological speech impairment; Occipital encephalocele; Optic atrophy; Optic nerve hypoplasia; Pachygyria; Peters anomaly; Phenotypic variability; Polymicrogyria; Posterior fossa cyst; Proximal muscle weakness; Renal dysplasia; Retinal atrophy; Retinal detachment; Retinal dysplasia; Retinal dystrophy; Seizures; Severe muscular hypotonia; Short stature; Skeletal muscle atrophy; Specific learning disability; Strabismus; Thick cerebral cortex; Type II lissencephaly; Visual impairmentMuscular dystropy-dystroglycanopathy (Walker-Warburg)
MARS22q33.1100%gene with protein product609728Anteverted nares; Autosomal recessive inheritance; Cerebellar atrophy; Cerebral atrophy; Cerebral cortical atrophy; Cognitive impairment; Congenital onset; Depressed nasal bridge; Dysmetria; Dystonia; Feeding difficulties; Gait ataxia; Generalized hypotonia; Global developmental delay; Growth hormone deficiency; Hearing impairment; Horizontal nystagmus; Hyperreflexia; Long philtrum; Low-set ears; Mild hearing impairment; Pectus carinatum; Short nose; Short stature; Spastic ataxia; Spasticity; Wide nasal bridge
OPA13q2999.94%gene with protein product605290Abnormal amplitude of pattern reversal visual evoked potentials; Abnormal auditory evoked potentials; Abnormality of color vision; Achilles tendon contracture; Adductor longus contractures; Apnea; Ataxia; Autosomal dominant inheritance; Autosomal recessive inheritance; Babinski sign; Breech presentation; Caesarian section; Central scotoma; Centrocecal scotoma; Cerebellar atrophy; Dysmetria; Feeding difficulties in infancy; Gait disturbance; Hamstring contractures; Horizontal nystagmus; Hyperreflexia; Hypertrophic cardiomyopathy; Impaired pain sensation; Incomplete penetrance; Increased variability in muscle fiber diameter; Insidious onset; Intellectual disability; Motor delay; Muscular hypotonia of the trunk; Myopathy; Nystagmus; Ophthalmoplegia; Opisthotonus; Optic atrophy; Peripheral neuropathy; Phenotypic variability; Profound global developmental delay; Progressive; Progressive sensorineural hearing impairment; Progressive spasticity; Progressive visual loss; Ptosis; Red-green dyschromatopsia; Reduced tendon reflexes; Reduced visual acuity; Retinal degeneration; Sensorineural hearing impairment; Skeletal muscle atrophy; Strabismus; Tremor; Tritanomaly; Visual impairment; Weak cry
POLR3B12q23.399.99%gene with protein product614366Abnormal upper motor neuron morphology; Ataxia; Autosomal dominant inheritance; Autosomal recessive inheritance; Babinski sign; Cerebellar atrophy; Cerebral cortical atrophy; Cerebral hypomyelination; CNS hypomyelination; Cryptorchidism; Decreased testicular size; Delayed eruption of teeth; Delayed puberty; Drooling; Dysarthria; Dysdiadochokinesis; Dysmetria; Dysphagia; Dystonia; Global developmental delay; Gynecomastia; Horizontal nystagmus; Hypergonadotropic hypogonadism; Hyperreflexia; Hypodontia; Hypogonadotrophic hypogonadism; Hypoplasia of the corpus callosum; Impaired horizontal smooth pursuit; Intellectual disability, mild; Intention tremor; Leukodystrophy; Micropenis; Myopia; Oligodontia; Phenotypic variability; Postural tremor; Primary amenorrhea; Progressive; Short stature; Sparse axillary hair; Sparse pubic hair; Spasticity
SIX614q23.1100%gene with protein product606326OPTX2Agenesis of corpus callosum; Anophthalmia; Anterior pituitary hypoplasia; Autosomal dominant inheritance; Autosomal recessive inheritance; Butterfly vertebrae; Cataract; Coloboma; Cryptorchidism; Esophageal atresia; Frontal bossing; Generalized hypotonia; Global developmental delay; Hemivertebrae; Horizontal nystagmus; Hypogonadotrophic hypogonadism; Hypoplasia of the corpus callosum; Hypospadias; Hypothalamic hamartoma; Microcephaly; Micropenis; Microphthalmia; Miosis; Missing ribs; Optic nerve hypoplasia; Patent ductus arteriosus; Postnatal growth retardation; Retinal dystrophy; Rib fusion; Sensorineural hearing impairment; Short stature; Spastic diplegia; Spastic tetraplegia; Specific learning disability; Supernumerary ribs; Ventricular septal defect; Vertebral fusion; Vertebral hypoplasia
SNIP11p34.3100%gene with protein product608241Abnormal facial shape; Aortic valve stenosis; Autosomal recessive inheritance; Bicuspid aortic valve; Broad jaw; Broad thumb; Bulbous nose; CNS hypomyelination; EEG abnormality; Feeding difficulties; Generalized hypotonia; Global developmental delay; Horizontal nystagmus; Hypoplasia of the corpus callosum; Hyporeflexia; Macroglossia; Seizures; Short palm; Strabismus; Subglottic stenosis; Tapered finger; Umbilical hernia; Ventriculomegaly; Wide mouth
SURF19q34.299.74%gene with protein product185620Abnormal pattern of respiration; Ataxia; Autosomal recessive inheritance; Axonal loss; CNS demyelination; Difficulty walking; Dysarthria; Dystonia; Easy fatigability; Emotional lability; Failure to thrive; Generalized hypotonia; Gliosis; Global developmental delay; Hepatocellular necrosis; Heterogeneous; Horizontal nystagmus; Hyperreflexia; Hypertrichosis; Increased CSF lactate; Increased serum lactate; Infantile onset; Intellectual disability; Kyphoscoliosis; Lactic acidosis; Mitochondrial inheritance; Nystagmus; Ophthalmoplegia; Optic atrophy; Peripheral demyelination; Peripheral neuropathy; Phenotypic variability; Pigmentary retinopathy; Progressive; Ptosis; Respiratory failure; Seizures; Sensorineural hearing impairment; Skeletal muscle atrophy; Slow progression; Spasticity; Strabismus; Variable expressivity
TPP111p15.4100%gene with protein product607998CLN2, SCAR7Abnormal nervous system electrophysiology; Ataxia; Autosomal recessive inheritance; Babinski sign; Broad-based gait; Cerebellar atrophy; Cerebral atrophy; Clumsiness; Curvilinear intracellular accumulation of autofluorescent lipopigment storage material; Delayed speech and language development; Developmental regression; Difficulty walking; Diplopia; Dysarthria; Dysmetria; Dysmetric saccades; Horizontal nystagmus; Hyperreflexia; Impaired vibratory sensation; Increased extraneuronal autofluorescent lipopigment; Increased neuronal autofluorescent lipopigment; Limb ataxia; Myoclonus; Oculomotor apraxia; Progressive cerebellar ataxia; Progressive gait ataxia; Progressive visual loss; Retinal degeneration; Saccadic smooth pursuit; Scanning speech; Seizures; Undetectable electroretinogram
TTBK215q15.2100%gene with protein product611695SCA11Adult onset; Autosomal dominant inheritance; Cerebellar atrophy; Difficulty walking; Dysarthria; Dysphagia; Gait imbalance; Horizontal nystagmus; Hyperreflexia; Jerky ocular pursuit movements; Nystagmus; Progressive cerebellar ataxia; Vertical nystagmus

The gene coverage data provided by GeneDx represent an estimate based on previous results, but the specific sequencing coverage data for the genes selected may vary from individual to individual, and cannot be predicted exactly. Changes to an approved gene list can only be made by contacting GeneDx directly at 888-729-1206 and asking to speak with a member of our Whole Exome Sequencing Laboratory.


Customize below OR enter Suggested Slice ID on printed requisition form
(e.g. 706 XomeDxSlice - Slice ID: CS-Albinism).

Suggested Slice IDSuggested Gene List Name
CS-AAAplastic Anemia
CS-AutoImmuneAutoimmune Disorders
CS-BBSBardet-Biedl Syndrome
CS-BMFBone Marrow Failure Syndromes
CS-CVIDCommon Variable Immune Deficiency
CS-CKUTCongenital Kidney and Urinary Tract (CKUT) Anomalies
CS-DSDDisorders of Sex Development
CS-EDEctodermal Dysplasia
CS-FAFanconi Anemia
CS-AnemiaHemolytic Anemia
CS-IBDInflammatory Bowel Disease
CS-MaleInfMale Infertility
CS-WWSMuscular dystropy-dystroglycanopathy (Walker-Warburg)
CS-NephroticNephrotic Syndrome
CS-PPKCIPalmoplantar keratoderma plus congenital ichthyosis
CS-Primary ImmunodefPrimary Immunodeficiency
CS-SRTDShort-Rib Thoracic Dysplasia
CS-WSWaardenburg Syndrome