| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Coxoauricular syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 4 | 
| Epilepsy, microcephaly, skeletal dysplasia syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Stimmler syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Stimmler syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcephalus, glomerulonephritis, marfanoid habitus syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Pseudoprogeria syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Microstomia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Mikati Najjar Sahli syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcephalus, lymphoedema, chorioretinopathy syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus, digital anomaly, intellectual disability syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 3 | 
| Osteogenesis imperfecta, recessive perinatal lethal, with microcephaly AND cataracts | Associated morphology | False | Congenital smallness | Inferred relationship | Some |  | 
| 3-phosphoglycerate dehydrogenase deficiency infantile form | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Deficiency of leukotriene C4 synthase | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Cross syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalus | Associated morphology | False | Congenital smallness | Inferred relationship | Some |  | 
| Microcolon | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Dysplasia of eye | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcornea | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microphakia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Reconstruction of microtia with free flap | Direct morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microgyria | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Reconstruction of microtia with free flap and microvascular anastomosis | Direct morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microphthalmic socket | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microphthalmos | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Micromelia | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Jeune thoracic dystrophy | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Neu-Laxova syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some |  | 
| Hydromicrocephaly | Associated morphology | False | Congenital smallness | Inferred relationship | Some |  | 
| Congenital microgastria | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Hypoplasia of eye | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Spastic ataxia with congenital miosis | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Sporadic fetal brain disruption sequence | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Congenital thread-like tail | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Congenital microhepatia | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Congenital narrowed tail | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Congenital small anus | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Colobomatous microphthalmia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Oro-facial digital syndrome type 14 | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 4 | 
| Microcephalus, complex motor and sensory axonal neuropathy syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Cleft palate, large ears, small head syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Oro-facial digital syndrome type 14 | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microdactyly | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus, cerebellar hypoplasia, cardiac conduction defect syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 4 | 
| Bilateral polymicrogyria | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalic primordial dwarfism Montreal type | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Nijmegen breakage syndrome-like disorder | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Congenitally small punctum lacrimale | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Autosomal recessive chorioretinopathy and microcephaly syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Polyneuropathy, intellectual disability, acromicria, premature menopause syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus, brain defect, spasticity, hypernatraemia syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalic primordial dwarfism Dauber type | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Congenital deafness with labyrinthine aplasia, microtia and microdontia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalic primordial dwarfism Alazami type | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, thin corpus callosum, intellectual disability syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Infantile cerebral and cerebellar atrophy with postnatal progressive microcephaly | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Extrasystoles, short stature, hyperpigmentation, microcephaly syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| X-linked colobomatous microphthalmia, microcephaly, intellectual disability, short stature syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| X-linked colobomatous microphthalmia, microcephaly, intellectual disability, short stature syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, short stature, intellectual disability, facial dysmorphism syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Polymicrogyria with optic nerve hypoplasia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Micrencephaly | Associated morphology | False | Congenital smallness | Inferred relationship | Some |  | 
| Simple microphthalmos | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 |