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Phenotypes Associated with This Genotype
Genotype
MGI:3849030
Allelic
Composition
Fgfrl1tm1.1Ptew/Fgfrl1tm1.1Ptew
Genetic
Background
B6.129-Fgfrl1tm1.1Ptew
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Fgfrl1tm1.1Ptew mutation (0 available); any Fgfrl1 mutation (30 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• remaining mice die during birth or shortly after

skeleton
• at E18.5, mice exhibit hypoplasia of all skeletal elements, including shortened axial and appendicular skeletons, malformed vertebrae, a small pelvic girdle, and a small rib cage
• calvarial elements are thin with a defect in suture closure unlike in wild-type mice
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
• the foramen magnum is displaced anteriorly compared to in wild-type mice
• mice exhibit severe hypoplasia and delayed fusion of the sphenoid, basisphenoid, and basioccipital bones compared with wild-type mice
• calvarial elements are thin
• small and often incompletely ossified
• reduced in size
• reduced in size
• cervical vertebrae ossification is delayed compared to in wild-type mice
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
• especially in the manubrium and xiphoid process
• mice exhibit a delay in suture closure between frontal and parietal bone compared with wild-type mice

craniofacial
• calvarial elements are thin with a defect in suture closure unlike in wild-type mice
• mice exhibit a large gap between the atlas and the occipital bone compared with wild-type mice
• the foramen magnum is displaced anteriorly compared to in wild-type mice
• mice exhibit severe hypoplasia and delayed fusion of the sphenoid, basisphenoid, and basioccipital bones compared with wild-type mice
• calvarial elements are thin
• small and often incompletely ossified
• mice exhibit midfacial hypoplasia compared with wild-type mice

cardiovascular system
• at E16.5, the yolk sac lacks a clear vasculature and is devoid of blood unlike in wild-type mice
• thickened at E14.5
• seen as early as E14.5 and up to E18.5 and varied in severity
• seen in two mutant embryos at E18.5
• thickened at E14.5

hematopoietic system
• fetal anemia
• at E14.5, mice exhibit an increase in basophilic erythroblasts and a decrease in mature erythroblasts compared with wild-type mice
• however, mice exhibit a normal pattern of erythroid differentiation at E16.5
• 23% at E16.5

growth/size/body
• mice exhibit midfacial hypoplasia compared with wild-type mice
• surviving mice are smaller than normal at birth
• the sternum is bent inward unlike in wild-type mice

embryo
• at E16.5, the yolk sac lacks a clear vasculature and is devoid of blood unlike in wild-type mice
• at E16.5, mice that die prior to birth exhibit pale placenta unlike wild-type mice

nervous system
• mcie exhibit brain overgrowth compared with wild-type mcie
• some mice exhibit bulging of the spinal cord at the gap between the atlas and occipital bone unlike in wild-type mice

muscle
• at E18.5, the lumbar and sternal muscle portions of the diaphragm are absent and the remaining costal portions are very thin compared to in wild-type mice

respiratory system
• reduced in size
• reduced in size

Mouse Models of Human Disease
DO ID OMIM ID(s) Ref(s)
Wolf-Hirschhorn syndrome DOID:0050460 OMIM:194190
J:149673


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
11/12/2024
MGI 6.24
The Jackson Laboratory