| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Stimmler syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcephalus, glomerulonephritis, marfanoid habitus syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Pseudoprogeria syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 5 | 
| Microcephalus, hypergonadotropic hypogonadism, short stature syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcephalus, lymphedema, 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 | 
| 3-phosphoglycerate dehydrogenase deficiency infantile form (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Deficiency of leukotriene C4 synthase (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Reconstruction of microtia with free flap (procedure) | Direct 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 (disorder) | Associated morphology | True | 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 | 
| Microphthalmos co-occurrent with congenital ocular coloboma (disorder) | 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 | 
| Microcephalus, cerebellar hypoplasia, cardiac conduction defect syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 4 | 
| Bilateral polymicrogyria (disorder) | 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 (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Autosomal recessive chorioretinopathy and microcephaly syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Polyneuropathy, intellectual disability, acromicria, premature menopause syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus, brain defect, spasticity, hypernatremia syndrome (disorder) | 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 (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, thin corpus callosum, intellectual disability syndrome (disorder) | 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 (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| X-linked colobomatous microphthalmia, microcephaly, intellectual disability, short stature syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| X-linked colobomatous microphthalmia, microcephaly, intellectual disability, short stature syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, short stature, intellectual disability, facial dysmorphism syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Polymicrogyria with optic nerve hypoplasia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Severe neonatal onset encephalopathy with microcephaly (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Prominent glabella with microcephaly and hypogenitalism syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Hall Riggs syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microtia | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus and intellectual disability with phalangeal and neurological anomaly syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| SOX2 anophthalmia syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus, glomerulonephritis, marfanoid habitus syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Goldberg Shprintzen megacolon syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcephaly, microphthalmia, ectrodactyly of lower limbs and prognathism syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Microspherophakia with metaphyseal dysplasia syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Oculopalatocerebral syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Cutaneous mastocytosis, short stature, hearing loss syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microlissencephaly micromelia syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Jawad syndrome | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Bilateral microtia with deafness and cleft palate syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Juvenile cataract, microcornea, renal glucosuria syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Short stature, pituitary and cerebellar defect and small sella turcica syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephaly with deafness and intellectual disability syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microspherophakia (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microphthalmia with brain atrophy syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephaly, hypogammaglobulinemia, abnormal immunity syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Coxoauricular syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Epiphyseal dysplasia, microcephalus, nystagmus syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus microcornea syndrome of Seemanova type (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Thrombocytopathy, asplenia and miosis (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Arrhinia with choanal atresia and microphthalmia syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalus with brachydactyly and kyphoscoliosis syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Pseudoprogeria syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 4 | 
| Microcephalus with albinism and digital anomaly syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalic osteodysplastic dysplasia Saul Wilson type (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalus cardiomyopathy syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 1 | 
| Bilateral microtia with deafness and cleft palate syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcornea with glaucoma and absent frontal sinus syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Cataract and microcornea syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Intellectual disability, hypoplastic corpus callosum, preauricular tag syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Hypertelorism with microtia and facial clefting syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Epilepsy, microcephaly, skeletal dysplasia syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Radioulnar synostosis with microcephaly and scoliosis syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microcephalus cleft palate syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Hadziselimovic syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Severe X-linked intellectual disability Gustavson type (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Thickened earlobe with conductive deafness syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Micromelic spondyloepimetaphyseal dysplasia | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, seizure, intellectual disability, heart disease syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microphthalmia with ankyloblepharon and intellectual disability syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Filippi syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephalus, hypergonadotropic hypogonadism, short stature syndrome (disorder) | Associated morphology | False | Congenital smallness | Inferred relationship | Some | 2 | 
| Lowry MacLean syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 4 | 
| Agammaglobulinemia, microcephaly, craniosynostosis, severe dermatitis syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Short rib polydactyly syndrome type I (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcephaly, polymicrogyria, corpus callosum agenesis syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Macrosomia, microphthalmia, cleft palate syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| THOC6-related developmental delay-microcephaly-facial dysmorphism syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Intellectual disability, feeding difficulties, developmental delay, microcephaly syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Hypogonadotropic hypogonadism, severe microcephaly, sensorineural hearing loss, dysmorphism syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Flat face, microstomia, ear anomaly syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Microcornea, posterior megalolenticonus, persistent fetal vasculature, coloboma syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Frontonasal dysplasia, severe microphthalmia, severe facial clefting syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 3 | 
| Autosomal dominant primary microcephaly | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Microphthalmia, retinitis pigmentosa, foveoschisis, optic disc drusen syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Colobomatous microphthalmia, obesity, hypogenitalism, intellectual disability syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 2 | 
| Microcornea, myopic chorioretinal atrophy, telecanthus syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Primary microcephaly, mild intellectual disability, young-onset diabetes syndrome (disorder) | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Primary microcephaly, epilepsy, permanent neonatal diabetes syndrome | Associated morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Reconstruction of microtia with microvascular anastomosis (procedure) | Direct morphology | True | Congenital smallness | Inferred relationship | Some | 1 | 
| Reconstruction of microtia with flap (procedure) | Direct morphology | True | Congenital smallness | Inferred relationship | Some | 1 |