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Symbol
Name
ID
Twist1
twist basic helix-loop-helix transcription factor 1
MGI:98872
Phenotype annotations related to skeleton
*Aspects of the system are reported to show a normal phenotype.
Darker colors indicate more annotations
Human Phenotypes
Abnormal skull morphology
Frontal bossing
Flat occiput
Prominent occiput
Parietal foramina
Biparietal narrowing
Brachycephaly
Acrobrachycephaly
Brachyturricephaly
Craniosynostosis
Coronal craniosynostosis
Bicoronal synostosis
Unicoronal synostosis
Left unicoronal synostosis
Right unicoronal synostosis
Lambdoidal craniosynostosis
Pansynostosis
Sagittal craniosynostosis
Dolichocephaly
Scaphocephaly
Plagiocephaly
Skull asymmetry
Trigonocephaly
Turricephaly
Oxycephaly
Micrognathia
Mandibular prognathia
Retrognathia
Hypoplasia of the maxilla
Malar flattening
Shallow orbits
Posterior fossa cyst
Microcephaly
Macrocephaly
Metopic synostosis
Prominent metopic ridge
Delayed cranial suture closure
Wormian bones
Wide anterior fontanel
Large fontanelles
Genu valgum
Partial duplication of the distal phalanx of the 2nd finger
Partial duplication of the distal phalanx of the 3rd finger
Clinodactyly of the 5th finger
Postaxial hand polydactyly
Short distal phalanx of finger
Shortening of all distal phalanges of the fingers
Broad distal phalanx of the thumb
Cone-shaped epiphyses of the phalanges of the hand
Shortening of all middle phalanges of the fingers
Broad thumb
Preaxial hand polydactyly
Triphalangeal thumb
Long fingers
Arachnodactyly
Duplication of the distal phalanx of the hallux
Broad hallux
Broad distal hallux
Hallux valgus
Cone-shaped epiphyses of the toes
Toe syndactyly
2-5 toe syndactyly
Brachydactyly
Syndactyly
Cutaneous syndactyly
Cutaneous finger syndactyly
2-5 finger cutaneous syndactyly
Finger syndactyly
2-4 finger syndactyly
Absent first metatarsal
Metatarsus adductus
Metaphyseal widening
Dislocated radial head
Humeroradial synostosis
Radioulnar synostosis
Proximal radio-ulnar synostosis
Genu recurvatum
Carpal bone malsegmentation
Synostosis of carpal bones
Joint contracture of the hand
Limited elbow movement
Rhizomelic arm shortening
Prominent crus of helix
Camptodactyly
Joint hypermobility
Cervical C5/C6 vertebrae fusion
Delayed epiphyseal ossification
Abnormal pelvic girdle bone morphology
Short clavicles
Lateral clavicle hook
Supernumerary ribs
Thin ribs
Pectus carinatum
Pectus excavatum
Narrow chest
Hyperlordosis
Scoliosis
Abnormal form of the vertebral bodies
C1-C2 vertebral abnormality
Osteopenia
Disease(s) Associated with TWIST1
acrocephalosyndactylia
craniosynostosis
Saethre-Chotzen syndrome
Sweeney-Cox syndrome

Mouse Phenotypes
skeleton phenotype
abnormal osteoblast differentiation
abnormal cranium morphology
enlarged interparietal bone
short temporal bone squamous part
temporal bone hypoplasia
abnormal zygomatic bone morphology
abnormal limb bone morphology
abnormal clavicle morphology
abnormal long bone epiphyseal plate morphology
abnormal long bone epiphyseal plate proliferative zone
increased width of hypertrophic chondrocyte zone
abnormal pelvic girdle bone morphology
abnormal rib morphology
abnormal vertebrae morphology
abnormal vertebral arch morphology
decreased trabecular bone volume
decreased bone trabecula number
decreased trabecular bone thickness
abnormal ossification involved in bone maturation
abnormal bone ossification
premature endochondral bone ossification
premature cranial suture closure
premature coronal suture closure
premature lambdoid suture closure
Availability Mouse Genotype
Twist1Ska10/Twist1Ska10
Twist1tm2Bhr/Twist1tm2Bhr *
Twist1em1(IMPC)Rbrc/Twist1+
Twist1Ska10/Twist1+
Twist1tm1Bhr/Twist1+
Twist1tm1Bhr/Twist1tm2Bhr
Tg(CAG-cat,-Twist1)1Dbsp/0
Tg(Col2a1-cre)1Bhr/0  (conditional)

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
04/16/2024
MGI 6.23
The Jackson Laboratory