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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
mgb
megabladder
MGI:3772357
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
mgb/mgb involves: C57BL/6 * FVB/N MGI:3772447
hm2
mgb/mgb involves: FVB/N MGI:5559723
cx3
Myocdtm1.1Msp/mgb involves: 129/Sv * FVB/N MGI:6450805
ot4
mgb/0 involves: C57BL/6 * FVB/N MGI:3772448


Genotype
MGI:3772447
hm1
Allelic
Composition
mgb/mgb
Genetic
Background
involves: C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• male mice rarely survive past 4 to 6 weeks of age

homeostasis/metabolism
• significantly increased levels observed in male mutant mice
• significantly increased levels observed in male mutant mice
• significantly increased levels observed in male mutant mice
• significantly increased levels observed in male mutant mice

liver/biliary system
• a highly compressed parenchyma results from the presence of a large bladder

renal/urinary system
• large bladders leads to distended kidneys and pelvis
• ureters are severely distended due to fluid from enlarged bladders
• mice exhibit a severe distention of the bladder with a thin wall and lacking any significant smooth muscle layer
• male mice show show obvious signs of distension at birth and exhibit a rapid pathologic progression
• female mice have a slower pathological progression and only develop overt distended bladders latter in life
• luminal opening of bladder to urethra is small
• a distended bladder is observable in male mice at E18 lacks a smooth muscle layer
• female mice have a less severe morphology of the bladder at E18 with a moderate distension and a thin muscle layer
• a highly disorganized muscle layer is evident around the bladder at E15 with only patchy areas of differentiating muscle cells evident
• there is a 5- to 10-fold increase in the number of apoptotic cells in the mesenchymal layer at E15 compared to wild-type controls
• male bladders are completely refilled within 1 to 2 hours after percutaneous drainage

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
kidney disease DOID:557 J:207566




Genotype
MGI:5559723
hm2
Allelic
Composition
mgb/mgb
Genetic
Background
involves: FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• males die within 1 week of birth
• survival of females is similar to controls

renal/urinary system
• grossly dilated bladders
• renal urothelium of severely affected kidneys contains numerous multilayered regions of 3-5 cells throughout the renal pelvis and show frequent cellular blebbing compared to controls that have a single layer of cuboidal cells with intermittent multilayered regions of 2-3 cells
• severely affected kidneys show a 20-fold increase in the percentage of cellular proliferation within the renal urothelium

muscle




Genotype
MGI:6450805
cx3
Allelic
Composition
Myocdtm1.1Msp/mgb
Genetic
Background
involves: 129/Sv * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
mgb mutation (0 available); any mgb mutation (0 available)
Myocdtm1.1Msp mutation (0 available); any Myocd mutation (56 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• die within 1 week of birth

cardiovascular system
• in newborns

renal/urinary system
• grossly dilated bladders

cellular
• in newborns

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
congenital megabladder DOID:0112014 OMIM:618719
J:283803




Genotype
MGI:3772448
ot4
Allelic
Composition
mgb/0
Genetic
Background
involves: C57BL/6 * FVB/N
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
renal/urinary system
• at E15, normal regions of mesencymal compaction are interspersed with slightly less compacted regions

homeostasis/metabolism
• significantly increased levels observed in male mutant mice
• significantly increased levels observed in male mutant mice





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last database update
08/02/2024
MGI 6.24
The Jackson Laboratory