| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Immunoglobulin, L chain, lambda | Is a | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier |  | 
| Immunoglobulin, L chain, kappa | Is a | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier |  | 
| Urine light chain measurement | Component | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 2 | 
| Lymphocyte light chain | Is a | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier |  | 
| Light chain measurement | Component | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 1 | 
| Detection of ordinal level of free immunoglobulin light chain in serum or plasma specimen | Component | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 2 | 
| Quantitative measurement of immunoglobulin G and immunoglobulin M and immunoglobulin A and immunoglobulin light chain in serum or plasma specimen | Component | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 5 | 
| Free immunoglobulin light chain | Is a | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier |  | 
| Free lambda light chain | Is a | False | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier |  | 
| Amyloid light-chain amyloidosis | Causative agent | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 4 | 
| Sporadic primary amyloidosis | Causative agent | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 4 | 
| Amyloid light-chain nephropathy | Causative agent | False | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 6 | 
| Primary systemic amyloidosis due to occult plasma cell dyscrasia | Causative agent | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 4 | 
| Amyloid light chain amyloidosis due to multiple myeloma | Causative agent | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 4 | 
| Amyloid light-chain nephropathy | Causative agent | True | Immunoglobulin, light chain | Inferred relationship | Existential restriction modifier | 1 |