Durable hematological response and improvement of nephrotic syndrome on thalidomide therapy in a patient with refractory light chain deposition disease

Haruyuki Fujita, Masakatsu Hishizawa, Soichiro Sakamoto, Tadakazu Kondo, Norimistu Kadowaki, Takayuki Ishikawa, Junji Itoh, Atsushi Fukatsu, Takashi Uchiyama, Akifumi Takaori-Kondo
International Journal of Hematology 2011, 93 (5): 673-676
Light chain deposition disease (LCDD) is a rare disease for which an optimal treatment is not yet available. Here, we report the clinical course of a 32-year-old woman with LCDD who was successfully treated with thalidomide. She presented with nephrotic syndrome. Based on the renal biopsy findings and the presence of monoclonal immunoglobulin light chains in her serum and urine, LCDD was diagnosed. Prednisolone and cytotoxic chemotherapy used for multiple myeloma proved ineffective. We initiated administration of thalidomide (100 mg daily) and dexamethasone (20 mg for 4 days per month). After 8 months of treatment, she achieved complete hematological remission, defined as the disappearance of monoclonal protein and a normalized free light chain ratio, which led to improvement of her renal insufficiency. She has shown sustained hematological and organ response for 31 months with thalidomide therapy. Thus, thalidomide therapy seems to be a promising approach to the treatment of LCDD.

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