| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Congenital horizontal mandibular hypoplasia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Diffuse hypoplasia of right ventricle | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital pontocerebellar hypoplasia type 5 (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of cerebrum | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplasia and coloboma of alar cartilage with telecanthus syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Fibulo-ulnar hypoplasia and renal anomalies syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Distal limb deficiency with micrognathia syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Brachymorphism with onychodysplasia and dysphalangism syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Amyotrophia congenita | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Agenesis of corpus callosum, intellectual disability, coloboma, micrognathia syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Left renal agenesis co-occurrent with right renal hypoplasia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Splenogonadal fusion, limb defect, micrognathia syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Thickened earlobe with conductive deafness syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Diaphragmatic defect, limb deficiency, skull defect syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Deafness, enamel hypoplasia, nail defect syndrome (disorder) | Associated morphology | False | Hypoplasia | Inferred relationship | Some | 1 | 
| Limb mammary syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Scimitar syndrome with additional anomalous pulmonary venous connection (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Scimitar syndrome with additional anomalous pulmonary venous connection (disorder) | Associated morphology | False | Hypoplasia | Inferred relationship | Some | 2 | 
| Scimitar syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Scimitar syndrome | Associated morphology | False | Hypoplasia | Inferred relationship | Some | 3 | 
| Mandibular hypoplasia, deafness, progeroid syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Stabilization of hypoplastic thumb | Direct morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Streak gonad (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Short ulna, dysmorphism, hypotonia, intellectual disability syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypohidrosis, enamel hypoplasia, palmoplantar keratoderma, intellectual disability syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Partial corpus callosum agenesis, cerebellar vermis hypoplasia with posterior fossa cysts syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Short stature, pituitary and cerebellar defect and small sella turcica syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypoplastic left heart syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Turner's tooth | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Vascular ring with malrotation and dextroversion of heart and hypoplasia of right lung and left arterial duct (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypoplasia of left heart without intrinsic valve stenosis and without atresia (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Scalp, ear, nipple syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Antley-Bixler syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Congenital hypoplasia of eye bulge | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypotrichosis with keratosis pilaris and lentiginosis | Associated morphology | False | Hypoplasia | Inferred relationship | Some | 2 | 
| Hereditary hypotrichosis with recurrent skin vesicles syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypotrichia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Spondyloepimetaphyseal dysplasia, hypotrichosis syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Temple Baraitser syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Temple Baraitser syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hemifacial microsomia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Mammary digital nail syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Non-eruption of teeth, maxillary hypoplasia, genu valgum syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Microglossia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Craniofacial microsomia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Bilateral craniofacial microsomia (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplasia of uterus and cervix | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of ovary (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital ichthyosis with hypotrichosis syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplasia of pancreas, intestinal atresia, hypoplasia of gallbladder syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypoplasia of pancreas, intestinal atresia, hypoplasia of gallbladder syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Streak ovary | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Joint contracture, webbed neck, micrognathia, hypoplastic nipple syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Joint contracture, webbed neck, micrognathia, hypoplastic nipple syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Short stature, auditory canal atresia, mandibular hypoplasia, skeletal anomalies syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Hydrocephalus with cleft palate and joint contracture syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 6 | 
| Craniosynostosis with Dandy-Walker malformation and hydrocephalus syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 5 | 
| Facial dysmorphism, macrocephaly, myopia, Dandy-Walker malformation syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 5 | 
| Dandy-Walker syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Dandy-Walker malformation with postaxial polydactyly syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| X-linked Dandy-Walker malformation with intellectual disability, basal ganglia disease and seizure syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Dandy-Walker syndrome with spina bifida | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Macrocephaly, short stature, paraplegia syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Spinal muscular atrophy, Dandy-Walker malformation, cataract syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Congenital pontocerebellar hypoplasia type 9 (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Congenital pontocerebellar hypoplasia type 9 (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Foveal hypoplasia with presenile cataract syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Pancreatic hypoplasia, diabetes mellitus, congenital heart disease syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Leydig cell agenesis | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Ventricular imbalance with dominant left ventricle and hypoplastic right ventricle (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Ventricular imbalance with dominant right ventricle and hypoplastic left ventricle (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Achondrogenesis, type IA | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypoganglionosis of large intestine (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypoganglionosis of large intestine (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Acrorenal mandibular syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypotrichosis, osteolysis, periodontitis, palmoplantar keratoderma syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Short stature with craniofacial anomalies and genital hypoplasia syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Myelatelia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypotrichosis and intellectual disability syndrome Lopes type (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hemifacial microsomia with radial defect syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Incomplete development of membranous labyrinth | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Metaphyseal dysplasia, maxillary hypoplasia, brachydactyly syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplastic tricuspid papillary muscle | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplasia of eye | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Rudimentary tracheal bronchus | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of finger (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Achondrogenesis | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hirschsprung disease with nail hypoplasia and dysmorphism (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 | 
| Hypoplasia of right atrioventricular valve annulus in double inlet ventricle (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Achondrogenesis, type II | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hypoplastic mitral papillary muscle | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Short stature, onychodysplasia, facial dysmorphism, hypotrichosis syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Camptomelic dysplasia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Neonatal sclerosing cholangitis, ichthyosis, hypotrichosis syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| svår akondroplasi med försenad utveckling och acanthosis nigricans | Associated morphology | False | Hypoplasia | Inferred relationship | Some | 3 | 
| Achondroplasia | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypoplasia of left atrioventricular valve annulus in double inlet ventricle (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hyposmia, nasal and ocular hypoplasia, hypogonadotropic hypogonadism syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 1 | 
| Hyposmia, nasal and ocular hypoplasia, hypogonadotropic hypogonadism syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 4 | 
| Stimmler syndrome | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 2 | 
| Hypotrichosis with juvenile macular degeneration syndrome (disorder) | Associated morphology | True | Hypoplasia | Inferred relationship | Some | 3 |