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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Ror2tm1Anec
targeted mutation 1, Aris N Economides
MGI:3793279
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Ror2tm1Anec/Ror2tm1Anec B6.129S1-Ror2tm1Anec MGI:3793282
ht2
Ror2tm1Anec/Ror2+ B6.129S1-Ror2tm1Anec MGI:3793283


Genotype
MGI:3793282
hm1
Allelic
Composition
Ror2tm1Anec/Ror2tm1Anec
Genetic
Background
B6.129S1-Ror2tm1Anec
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ror2tm1Anec mutation (0 available); any Ror2 mutation (125 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
• reduced number but normal motility and fertilization capability

skeleton
• absence of P2
• reduced longitudinal axis
• increased intra-orbital width
• resulting from reduced length of the anterior region from the infradentale to the menton landmarks
• present at E18.5 in association with misshapen thoracic vertebrae
• deformities and titling are seen at E14.5
• hypoplastic and irregularly stacked at E14.5
• smaller and titled at E18.5
• presence of hemivertebrae results in tail kinks
• seen in about 5% of mice
• misshapen in about 20% of mice at E18.5
• at 3 weeks of age a 52% reduction in trabecular bone volume is seen in the femur
• at 3 weeks of age a a 57% decrease in the number of trabeculae is seen in the femur
• hypoplastic with reduction in the size of all anlagens at E14.5
• reduced number of cells in chondrogenic condensations at E13; however cell density appears unaffected
• onset of developmental hallmarks (hypertrophy, vascularization) is delayed
• mineral apposition rate is lower but mineralizing surface per bone surface is increased resulting in an increased calculated bone formation rate
• delayed ossification of the metacarpals, metatarsals, and phalanges at E18.5

limbs/digits/tail
• stylopod and zeugopod bones are 12-19% shorter than in controls at weaning but this difference decreases with age
• 5% display bifid digit I on the right hind paw
• absence of P2
• on fore and hind paws
• reduced size of cartilage condensations at E14.5
• impaired segmentation of the digital rays at E14.5 but otherwise patterning is normal
• presence of hemivertebrae results in tail kinks
• seen in about 5% of mice
• 25% have one or more tail kinks

growth/size/body
• increased relative to body weight
• detectable before weaning
• decrease in length but not in width

adipose tissue
• decreased fat mass

homeostasis/metabolism
N
• despite changes in body mass, no significant differences in metabolic parameters or glucose or insulin tolerances are detected

reproductive system
• reduced number but normal motility and fertilization capability
• in early puberty the density of tubules is decreased and only a single basal cell layer is present within the tubules
• these abnormalities are partially resolved in adults
• in early puberty
• at 2 months of age
• in trial matings to CD-1 females the pregnancy rate is 4% compared to 15% for heterozygous controls
• however, female fertility is normal

vision/eye
• increased intra-orbital width
• often associated with excessive tearing

craniofacial
• increased intra-orbital width
• resulting from reduced length of the anterior region from the infradentale to the menton landmarks

endocrine/exocrine glands
• in early puberty the density of tubules is decreased and only a single basal cell layer is present within the tubules
• these abnormalities are partially resolved in adults
• in early puberty
• at 2 months of age

respiratory system

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
autosomal recessive Robinow syndrome DOID:0060764 OMIM:268310
J:134490




Genotype
MGI:3793283
ht2
Allelic
Composition
Ror2tm1Anec/Ror2+
Genetic
Background
B6.129S1-Ror2tm1Anec
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Ror2tm1Anec mutation (0 available); any Ror2 mutation (125 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
limbs/digits/tail
N
• unlike human patients with a similar mutation in ROR2, mice are normal and do not display brachydactyly

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
NOT brachydactyly type B1 DOID:0110969 OMIM:113000
J:134490





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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
11/05/2024
MGI 6.24
The Jackson Laboratory