| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Congenital absence of thymus | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of gonads | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of spleen | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of sternum | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of bladder | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of humerus | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of patella | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of urethra | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of eyelash | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of jejunum | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of clitoris | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of appendix | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of pancreas | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of stomach | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of ischium | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of maxilla | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of scapula | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of prostate | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of ear lobe | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of bronchus | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of vertebra | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of trachea | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of duodenum (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of mandible | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of oviduct (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of diaphragm | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of calcaneus | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of sternebra | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of eye bulge | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of bile duct (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of vena cava | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of one tooth | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of esophagus | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of left hand | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of nasal bone | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of premaxilla | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of all fingers | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of portal vein | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of gallbladder | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of epididymis | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of hyoid bone | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of upper limb | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of right hand | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of epiglottis (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of carpal bone | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of tarsal bone | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of azygos vein | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of both testes (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of both testes (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Congenital absence of labium minor | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of labium major | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of left testis (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of left lower limb (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Partial congenital absence of teeth | Associated morphology | False | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Oligodontia | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Alopecia, progressive neurological defect, endocrinopathy syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Postaxial tetramelic oligodactyly | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ectodermal dysplasia syndactyly syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Spondyloepimetaphyseal dysplasia, abnormal dentition syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Oligodontia and cancer predisposition syndrome | Associated morphology | False | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Congenital alopecia | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ectrodactyly polydactyly syndrome | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Thumb deformity, alopecia, pigmentation anomaly syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Poikiloderma, alopecia, retrognathism, cleft palate syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Alopecia, epilepsy, intellectual disability syndrome Moynahan type | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital hypoplasia of ulna and split foot syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Congenital absence of right mandibular condyle | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of left mandibular condyle | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of forearm and hand | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of forearm and hand | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Congenital absence of optic chiasma (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Adactyly | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Robin sequence and oligodactyly syndrome | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Ichthyosis, alopecia, eclabion, ectropion, intellectual disability syndrome | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Isolated congenital adermatoglyphia | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of innominate vein (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Hartsfield syndrome | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Congenital absence of left hemidiaphragm (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of right hemidiaphragm (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of right testis | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Aplasia cutis congenita of limb (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Aniridia, ptosis, intellectual disability, familial obesity syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Short tarsus with absence of lower eyelashes syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Hypomyelination, hypogonadotropic hypogonadism, hypodontia syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Intellectual disability, balding, patella luxation, acromicria syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Gomez Lopez Hernandez syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Ptosis, upper ocular movement limitation, absence of lacrimal punctum syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Pericardial and diaphragmatic defect syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Frontonasal dysplasia with alopecia and genital anomaly syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Familial isolated congenital asplenia (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Congenital absence of part of upper limb | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Autosomal recessive aplasia cutis congenita of limb (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Anonychia with microcephaly syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Anophthalmia plus syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Arrhinia with choanal atresia and microphthalmia syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 3 | 
| Choroidal atrophy and alopecia syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Ectodermal dysplasia with ectrodactyly and macular dystrophy syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Alopecia, psychomotor epilepsy, periodontal pyorrhea, intellectual disability syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Alopecia and intellectual disability with hypergonadotropic hypogonadism syndrome (disorder) | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 2 | 
| Anonychia | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 1 | 
| Anonychia with bizarre flexural pigmentation | Associated morphology | True | Absence (morphologic abnormality) | Inferred relationship | Some | 3 |