Gene Summary

sphingomyelin phosphodiesterase, acid-like 3A
0610010C24Rik,  ASML3A,  ASM3A

IMPC Data Collections

IMPC Phenotype Summary

Not Significant
Not tested


The IMPC applies a panel of phenotyping screens to characterise single-gene knockout mice by comparison to wild types. Click on the different tabs to visualise significant phenotypes identified by the IMPC, as well as all data that was measured.

Phenotype System Allele Zyg Sex Life Stage P Value
abnormal skin morphology Smpdl3aem1(IMPC)Tcp HOM Early adult 0.00
prolonged RR interval Smpdl3aem1(IMPC)Tcp HOM Early adult 8.50×10-05

Download data as:  TSV  XLS

Select physiological systems to view:
Viewing: all phenotypes
Select physiological systems to view:
Viewing: all phenotypes

lacZ Expression

Expression data not available

Associated Images

Images submitted by IMPC centres for a selection of procedures. Each set of images is available to view in our image comparator.

Eye Morphology

Images Slit Lamp

6 Images


XRay Images Whole Body Dorso Ventral

10 Images


XRay Images Skull Lateral Orientation

10 Images


XRay Images Skull Dorso Ventral Orientation

10 Images



5 Images

Gross Pathology and Tissue Collection


8 Images


XRay Images Whole Body Lateral Orientation

10 Images

Eye Morphology

Images Ophthalmoscopy

1 Images

Human diseases caused by Smpdl3a mutations

The analysis uses data from IMPC, along with published data on other mouse mutants, in comparison to human disease reports in OMIM, Orphanet, and DECIPHER.

Phenotype comparisons summarize the similarity of mouse phenotypes with human disease phenotypes.

No human diseases associated to this gene by orthology or annotation.

The table below shows human diseases predicted to be associated to Smpdl3a by phenotypic similarity.

Disease Similarity of
Matching phenotypes Source
Sinoatrial Node Dysfunction And Deafness
Increased heart rate variability, Abnormal QRS complex, Syncope, Bradycardia OMIM:614896
Atrial Fibrillation, Familial, 18
Paroxysmal atrial fibrillation, First degree atrioventricular block, Permanent atrial fibrillatio... OMIM:617280
Ventricular Tachycardia, Catecholaminergic Polymorphic, 2
Polymorphic ventricular tachycardia, Syncope, Ventricular tachycardia, Bradycardia OMIM:611938
Long Qt Syndrome 15
Ventricular ectopy, 2:1 atrioventricular block, Cardiac arrest, Polymorphic ventricular tachycard... OMIM:616249
Progressive Familial Heart Block, Type Ib
Prolonged QT interval, Shortened PR interval, Atrioventricular block, Right bundle branch block, ... OMIM:604559
Epilepsy, Idiopathic Generalized, Susceptibility To, 18
Bradycardia OMIM:619521
Cardiac Conduction Disease With Or Without Dilated Cardiomyopathy
Atrial flutter, Tachycardia, Atrial fibrillation, Cardiac arrest, Congestive heart failure, Dilat... OMIM:616117
Familial Short Qt Syndrome
Atrial fibrillation, Sudden cardiac death, Shortened QT interval, Atrioventricular block, Syncope... ORPHA:51083
Long Qt Syndrome 9
Prolonged QT interval, Cardiac arrest, Sinus bradycardia, Syncope, Abnormal U wave, Ventricular a... OMIM:611818
Atrial Standstill
Ventricular escape rhythm, Cardiac conduction abnormality, Atrial standstill, Congestive heart fa... ORPHA:1344
Long Qt Syndrome 16
Second degree atrioventricular block, Prolonged QTc interval, T-wave alternans, Bradycardia OMIM:618782
Sick Sinus Syndrome 4
Sinoatrial block, Chronotropic incompetence, Abnormal QT interval, Paroxysmal atrial fibrillation... OMIM:619464
Incessant Infant Ventricular Tachycardia
Wolff-Parkinson-White syndrome, Bundle branch block, Prolonged QRS complex, Cardiac arrest, Conge... ORPHA:45453
Brugada Syndrome
Tachycardia, Cardiac arrest, First degree atrioventricular block, Trifascicular block, ST segment... ORPHA:130
Sick Sinus Syndrome 1
Prolonged QT interval, Ventricular escape rhythm, Absent P wave, Atrioventricular block, Sinus br... OMIM:608567
Long Qt Syndrome 5
Sudden cardiac death, Sinus bradycardia, Syncope, Torsade de pointes, Prolonged QTc interval, Ven... OMIM:613695
Cardiomyopathy, Familial Hypertrophic, 6
Wolff-Parkinson-White syndrome, Atrial fibrillation, Prolonged QRS complex, Congestive heart fail... OMIM:600858
Long Qt Syndrome 2
Prolonged QT interval, Cardiac arrest, Sudden cardiac death, Syncope, Torsade de pointes, Prolong... OMIM:613688
Atrial Fibrillation, Familial, 7
Paroxysmal atrial fibrillation, Permanent atrial fibrillation, Prolonged QTc interval, Sinus brad... OMIM:612240
Chronic Atrial And Intestinal Dysrhythmia
Ventricular escape rhythm, Atrial flutter, Atrial fibrillation, Mitral regurgitation, Sick sinus ... OMIM:616201
Short Qt Syndrome 2
Atrial fibrillation, Sudden cardiac death, Shortened QT interval, Syncope, Bradycardia, Ventricul... OMIM:609621
Progressive Familial Heart Block, Type Ii
Sudden cardiac death, Atrioventricular block, Complete heart block with narrow QRS complexes, Sin... OMIM:140400
Cardiac Arrhythmia, Ankyrin-B-Related
Prolonged QT interval, Atrial fibrillation, Sudden cardiac death, Sinus bradycardia, Syncope OMIM:600919
Cardiomyopathy, Dilated, 1A
Atrial flutter, Atrial fibrillation, First degree atrioventricular block, Sudden cardiac death, C... OMIM:115200
Long Qt Syndrome 8
Sudden cardiac death, Sinus bradycardia, Syncope, Aborted sudden cardiac death, Prolonged QTc int... OMIM:618447
Wolff-Parkinson-White Syndrome
Wolff-Parkinson-White syndrome, Atrial flutter, Paroxysmal atrial fibrillation, Prolonged QRS com... OMIM:194200
Atrial Septal Defect 6
Atrial fibrillation, Bradycardia OMIM:613087
Sick Sinus Syndrome 2
Aortic regurgitation, Paroxysmal atrial fibrillation, Atrial fibrillation, Cardiac arrest, Sudden... OMIM:163800
Lodder-Merla Syndrome, Type 1, With Impaired Intellectual Development And Cardiac Arrhythmia
Sick sinus syndrome, Bradycardia OMIM:617173
Myopathy, Myofibrillar, 1
Dilated cardiomyopathy, Third degree atrioventricular block, Bradycardia, Restrictive cardiomyopa... OMIM:601419
Romano-Ward Syndrome
Sudden cardiac death, Sinus bradycardia, Syncope, Torsade de pointes, Abnormal T-wave, Prolonged ... ORPHA:101016
Atrial Fibrillation, Familial, 10
Atrial flutter, Tricuspid regurgitation, Paroxysmal atrial fibrillation, Permanent atrial fibrill... OMIM:614022
Paroxysmal Extreme Pain Disorder
Tachycardia, Bradycardia OMIM:167400
Sudden Cardiac Failure, Infantile
Sudden cardiac death, Myocarditis, Congestive heart failure, Bradycardia, Hypertrophic cardiomyop... OMIM:617222
Congenital Heart Block
First degree atrioventricular block, Gallop rhythm, Congestive heart failure, Atrioventricular bl... ORPHA:60041
Cardiomyopathy, Dilated, 1D
Prolonged QT interval, Increased left ventricular end-diastolic volume, Atrial fibrillation, Sudd... OMIM:601494
Brugada Syndrome 3
Atrial fibrillation, J wave, Sudden cardiac death, Shortened QT interval, Syncope, Ventricular ar... OMIM:611875
Lodder-Merla Syndrome, Type 2, With Developmental Delay And With Or Without Cardiac Arrhythmia
Sick sinus syndrome, Bradycardia OMIM:617182
Tako-Tsubo Cardiomyopathy
Prolonged QT interval, Atrial fibrillation, Mildly reduced left ventricular ejection fraction, An... ORPHA:66529
Emery-Dreifuss Muscular Dystrophy 7, Autosomal Dominant
Atrial fibrillation, Bradycardia OMIM:614302
X-Linked Intellectual Disability-Plagiocephaly Syndrome
Bradycardia ORPHA:2898
Atrial Standstill 2
Atrial cardiomyopathy, Absent P wave, Atrial standstill, Cardiomyopathy, Bradycardia, Palpitation... OMIM:615745
Mitochondrial Complex I Deficiency, Nuclear Type 13
Hypertrophic cardiomyopathy, Bradycardia, Cardiac arrest OMIM:618235
Coenzyme Q10 Deficiency, Primary, 7
Hypertrophic cardiomyopathy, Bradycardia OMIM:616276
Gnb5-Related Intellectual Disability-Cardiac Arrhythmia Syndrome
Ventricular escape rhythm, Sick sinus syndrome, Bradycardia, Prolonged PR interval, Arrhythmia ORPHA:542306
Chromosome 1P36.33 Duplication Syndrome, Atad3 Gene Cluster, Autosomal Dominant
Hypertrophic cardiomyopathy, Dilated cardiomyopathy, Bradycardia OMIM:618815
Congenital Myopathy 2B, Severe Infantile, Autosomal Recessive
Bradycardia OMIM:620265
Mitochondrial Short-Chain Enoyl-Coa Hydratase 1 Deficiency
Hypertrophic cardiomyopathy, Bradycardia OMIM:616277
Aminoacylase 1 Deficiency
Bradycardia OMIM:609924
Mitochondrial Complex Iv Deficiency, Nuclear Type 4
Congestive heart failure, Bradycardia OMIM:619048
Carnitine-Acylcarnitine Translocase Deficiency
Cardiac arrest, Ventricular tachycardia, Atrioventricular block, Premature ventricular contractio... OMIM:212138
Wild Type Attr Amyloidosis
Abnormal EKG, Myocardial infarction, Congestive heart failure, Bradycardia, Arrhythmia, Hypertrop... ORPHA:330001
Infant Acute Respiratory Distress Syndrome
Tachycardia, Bradycardia, Cardiac arrest, Hypotension ORPHA:70587
Lipoyltransferase 1 Deficiency
Pulmonary arterial hypertension, Bradycardia OMIM:616299
Timothy Syndrome
Prolonged QT interval, Ventricular tachycardia, Atrioventricular block, Bradycardia, Pulmonary ar... OMIM:601005
Glycogen Storage Disease Of Heart, Lethal Congenital
Prolonged QRS complex, Left axis deviation, Congestive heart failure, ST segment elevation, Short... OMIM:261740
Developmental And Epileptic Encephalopathy 101
Third degree atrioventricular block, Bradycardia OMIM:619814
Cln3 Disease
T-wave inversion, Bradycardia ORPHA:228346
Coenzyme Q10 Deficiency, Primary, 5
Bradycardia OMIM:614654
Microcephaly, Cerebellar Hypoplasia, And Cardiac Conduction Defect Syndrome
Bradycardia, Atrioventricular block OMIM:614407
Congenitally Corrected Transposition Of The Great Arteries
Wolff-Parkinson-White syndrome, First degree atrioventricular block, Heart block, Ventricular tac... ORPHA:216694
Idiopathic Congenital Hypothyroidism
Bradycardia ORPHA:95717
Combined Oxidative Phosphorylation Deficiency 10
Hypertrophic cardiomyopathy, Bradycardia OMIM:614702
Progressive External Ophthalmoplegia With Mitochondrial Dna Deletions, Autosomal Dominant 3
Cardiomyopathy, Arrhythmia, Bradycardia OMIM:609286
Hypertension, Tachycardia, Bradycardia ORPHA:3299
Rigidity And Multifocal Seizure Syndrome, Lethal Neonatal
Bradycardia OMIM:614498
Illum Syndrome
Bradycardia OMIM:208155
Glutamine Deficiency, Congenital
Bradycardia OMIM:610015
Congenital Hypothyroidism Due To Maternal Intake Of Antithyroid Drugs
Bradycardia ORPHA:226313
Acitretin/Etretinate Embryopathy
Third degree atrioventricular block, Bradycardia ORPHA:40366
Familial Thyroid Dyshormonogenesis
Bradycardia ORPHA:95716
Mitochondrial Complex I Deficiency, Nuclear Type 37
Pulmonary arterial hypertension, Bradycardia OMIM:619272
Lipodystrophy, Congenital Generalized, Type 4
Prolonged QT interval, Tachycardia, Atrial fibrillation, Bradycardia OMIM:613327
Pseudo-Torch Syndrome 2
Bradycardia, Cerebral hemorrhage OMIM:617397
Congenital Myopathy 22A, Classic
Tricuspid regurgitation, Bradycardia OMIM:620351
Necrotizing Enterocolitis
Shock, Bradycardia, Hypotension ORPHA:391673
Sudden Infant Death With Dysgenesis Of The Testes Syndrome
Bradycardia OMIM:608800
Mitochondrial Complex Iii Deficiency, Nuclear Type 10
Persistent fetal circulation, Hypertrophic cardiomyopathy, Bradycardia OMIM:618775
Glossopharyngeal Neuralgia
Syncope, Jaw claudication, Bradycardia ORPHA:221098
D-Glyceric Aciduria
Bradycardia OMIM:220120
Combined Oxidative Phosphorylation Defect Type 39
Bradycardia ORPHA:565624
Congenital Disorder Of Glycosylation, Type Im
Dilated cardiomyopathy, Bradycardia OMIM:610768
Neuropathy, Hereditary Sensory And Autonomic, Type Vi
Retinal hemorrhage, Hypertension, Tachycardia, Bradycardia OMIM:614653
Sepsis In Premature Infants
Tachycardia, Bradycardia, Hypotension ORPHA:90051
Neuroleptic Malignant Syndrome
Tachycardia, Pulmonary embolism, Hypertension, Bradycardia, Hypotension, Arrhythmia, Hypertensive... ORPHA:94093
Lujo Hemorrhagic Fever
Shock, Myocarditis, Subconjunctival hemorrhage, Bradycardia, Hypotension ORPHA:319213
Crimean-Congo Hemorrhagic Fever
Bundle branch block, Tachycardia, Epistaxis, Diffuse alveolar hemorrhage, Hematemesis, Myocarditi... ORPHA:99827
Encephalitis Lethargica
Bradycardia ORPHA:83600
Sheehan Syndrome
Palpitations, Orthostatic hypotension, Bradycardia ORPHA:91355
Proximal Spinal Muscular Atrophy
Bradycardia ORPHA:70
Hypothyroidism Due To Tsh Receptor Mutations
Bradycardia ORPHA:90673
Isolated Thyroid-Stimulating Hormone Deficiency
Bradycardia ORPHA:90674
Marburg Hemorrhagic Fever
Shock, Tachycardia, Pericarditis, Hypovolemia, Capillary leak, Subconjunctival hemorrhage, Bradyc... ORPHA:99826
Bohring-Opitz Syndrome
Bradycardia ORPHA:97297
Yellow Fever
Shock, Supraventricular arrhythmia, Hematemesis, Capillary leak, Reduced left ventricular ejectio... ORPHA:99829
Hypothyroidism Due To Deficient Transcription Factors Involved In Pituitary Development Or Function
Bradycardia ORPHA:226307
Cutis Laxa, Autosomal Recessive, Type Ib
Pulmonary insufficiency, Bradycardia OMIM:614437
Hypothyroidism, Congenital, Nongoitrous, 2
Bradycardia OMIM:218700
Severe Generalized Junctional Epidermolysis Bullosa
Dilated cardiomyopathy, Bradycardia ORPHA:79404
3-Methylglutaconic Aciduria, Type Viii
Bradycardia OMIM:617248


Summary table of phenotypes displayed during the Histopathology procedure which are considered significant. Full histopathology data table, including submitted images, can be accessed by clicking any row in this table.

Phenotype Allele Zygosity Sex Life Stage
Liver - MPATH pathological entity term steatosis Smpdl3aem1(IMPC)Tcp HOM Early adult
Liver - MPATH pathological process term vacuolation Smpdl3aem1(IMPC)Tcp HOM Early adult
Liver - MPATH pathological process term hydropic degeneration Smpdl3aem1(IMPC)Tcp HOM Early adult

IMPC related publications

The table below lists publications which used either products generated by the IMPC or data produced by the phenotyping efforts of the IMPC. These publications have also been associated to Smpdl3a.

No publications found that use IMPC mice or data for Smpdl3a.

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MGI Allele Allele Type Produced
Smpdl3aem1(IMPC)Tcp Exon Deletion Mice
Smpdl3atm42539(L1L2_st2) KO first allele (reporter-tagged insertion with conditional potential) Targeting vectors
Smpdl3atm1e(KOMP)Mbp Targeted, non-conditional allele ES Cells
Smpdl3atm1a(KOMP)Mbp KO first allele (reporter-tagged insertion with conditional potential) Targeting vectors, ES Cells
Smpdl3atm42539(L1L2_Pgk_PM) KO first allele (reporter-tagged insertion with conditional potential) Targeting vectors

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