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A series of studies, principally from the Mayo Clinic, have indicated that patients with an abnormal free kappa to free lambda ratio have an increased risk of progression to active myeloma from precursor conditions including monoclonal gammopathy of undetermined significance (MGUS), [32] [33] smouldering myeloma [34] and solitary plasmacytoma ...
The free light chain ratio ranges from 0.26 to 1.65. [1] Both the kappa and the lambda chains can increase proportionately, maintaining a normal ratio. This is usually indicative of something other than a blood cell dyscrasia, such as kidney disease.
The INR is a corrected ratio of a patient's PT to normal Activated partial thromboplastin time ... (FLC): kappa/lambda ratio: 0.26 [169] 1.65 [169] (unitless) Other ...
The normal cell type most closely associated ... which will generally express only kappa or lambda ... a serum involved / uninvolved free light chain ratio ...
Light chain MGUS is defined as a disorder in which a serum κ to λ free light chain ratio falls outside the normal range of 0.26–1.65 (mean =0.9) provided that it is not associated with: a) any of the CRAB criteria, b) a bone marrow plasma cell count of 10 or a higher percentage of nucleated cells, c) evidence of amyloid deposition (see ...
Quantification is important for disease classification and for disease monitoring once a patient has been treated (increased skewing of the ratio between kappa and lambda light chains after a patient has been treated is an indication of disease recurrence).
Normal B lymphocytes consist of a stew of different antibody-producing cells, resulting in a mixture of both kappa- and lambda-expressing cells. The lack of the normal distribution of these B cells is one basis for demonstrating clonality, the key element for establishing a diagnosis of any B cell malignancy (B cell non-Hodgkin lymphoma). [58]
An inverted CD4 + /CD8 + ratio (namely, less than 1/1) indicates an impaired immune system. [3] [4] [5] Conversely, an increased CD4 + /CD8 + ratio corresponds to increased immune function. [6] Obesity and dysregulated lipid metabolism in the liver leads to loss of CD4 +, but not CD8 + cells, contributing to the induction of liver cancer. [7]