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Phenotypes Associated with This Genotype
Genotype
MGI:7408196
Allelic
Composition
Rbm24tm1.1Xixu/Rbm24tm1.1Xixu
Tg(Myh6-cre)1Xya/0
Genetic
Background
involves: C57BL/6NTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rbm24tm1.1Xixu mutation (0 available); any Rbm24 mutation (15 available)
Tg(Myh6-cre)1Xya mutation (0 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice start to die at P11 and all die before 2 months of age
• earliest time of death is at P11

growth/size/body
• mice exhibit weight loss and smaller body size with increasing age

respiratory system
• mice exhibit shortness of breath with increasing age

cardiovascular system
• mice show increased dilation of the ventricle chambers at P5
• mice show increased cardiac fibrosis at P5
• mice exhibit dilated cardiomyopathy by P23
• mice show a decrease in left ventricular systolic function, showing a decrease in fractional shortening and ejection fraction, at P23
• echocardiography at P23 shows enlarged left ventricular chamber size, wall thinning, decreased interventricular septal thickness at end systole and decreased left ventricular posterior wall thickness at end systole, and an increase in left ventricular internal diameter during both systole and diastole
• mice develop heart failure
• congestion in the left ventricle and left atrium of hearts is seen after death

behavior/neurological
• mice exhibit decreased spontaneous activity preceding death

muscle
• mice exhibit dilated cardiomyopathy by P23
• mice show a decrease in left ventricular systolic function, showing a decrease in fractional shortening and ejection fraction, at P23
• sarcomere structure of heart shows minor defects at P5 but major alterations in myocardial structure at P23, including less, substantially short and dramatic disarrayed sarcomeres, irregular and wavy Z-disc and M-band
• the M-band is irregular and wavy in myocardium at P23
• irregular and wavy Z-disc and distribution of Z-disc is affected in myocardium at P23

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
dilated cardiomyopathy DOID:12930 OMIM:PS115200
J:302917


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory