ArticleOrphanet journal of rare diseases2025
Unexpected absence of fetal hemoglobin induction by lenalidomide in a patient with sickle cell anemia with concurrent multiple myeloma.
Article in Orphanet journal of rare diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Sickle cell anemia (SCA) and multiple myeloma (MM) are debilitating hematologic diseases impacting hemoglobin and plasma cells, respectively. Despite differing origins, they share overlapping clinical features including bone pain and anemia. A cornerstone of SCA is to induce fetal hemoglobin through hydroxyurea treatment. Lenalidomide, a central treatment of MM, has also been shown to induce fetal hemoglobin in vitro. Here we present a case of a young woman with SCA and subsequently multiple myeloma. When lenalidomide was used as part of multiple myeloma treatment, we investigated the proposed induction of fetal hemoglobin, using high-pressure liquid chromatography. Over a treatment period of 114 days, we did not observe lenalidomide-induced increases in fetal hemoglobin and were thereby unable to replicate in vitro findings. Moreover, the case highlights many difficulties of diagnosing and treating patients with SCA and concurrent malignancies.
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