Long-term complete remission in a multiple myeloma patient after Stevens-Johnson syndrome due to lenalidomide therapy

Favorable Prognosis in Patients With Multiple Myeloma and Lenalidomide-Induced Skin Rash: A Multicenter Retrospective Study

Although lenalidomide is an essential treatment for multiple myeloma (MM), skin rashes are a common adverse event. This retrospective study aimed to examine the association between skin rash development during lenalidomide treatment and the prognosis of relapsed/refractory MM. All patients who received lenalidomide at 10 hospitals between July 2009 and December 2015 were included in the study. The relationship of skin rash development with disease progression and survival was evaluated. Multivariate analysis was performed to identify factors affecting disease progression or survival, including skin rash. Of the 245 patients analyzed, 70 developed skin rashes. The median progression-free survival (PFS) of patients with skin rashes was 22.4 months, whereas the median PFS for patients who did not develop skin rashes was 10.5 months (p = 0.003). The median overall survival for patients with and without skin rash was 42.6 and 24.6 months, respectively (p = 0.013). Multivariate regression analysis showed that skin rash was an independent prognostic factor for PFS (p = 0.009). In this study, patients with skin rashes during lenalidomide treatment had significantly better PFS than those without such symptoms, indicating that lenalidomide-associated skin rashes may be a predictor of clinical outcomes in patients with MM.

Chemotherapy-induced toxic epidermal necrolysis in a patient with multiple myeloma, a case report and literature review

Rationale and patient concerns

Toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) are severe drug-induced skin reactions associated with a high mortality rate. The patient in this case report developed TEN after receiving the Velcade-lenalidomide-dexamethasone (VRD) regimen for the treatment of multiple myeloma (MM). The patient's concerns included the progression of the rash, pain, itching, and potential long-term complications. TEN is a life-threatening condition that requires prompt medical intervention and hospitalization.

Interventions

The treatment approach for the patient included discontinuation of the causative medication (lenalidomide) and comprehensive supportive therapy. Supportive measures included the administration of systemic corticosteroids (methylprednisolone), intravenous immunoglobulin infusion, pain relief medication (ebastine), antibiotic prophylaxis, laminar bed use, and regular dressing changes. The goal was to alleviate symptoms, promote skin and mucous membrane healing, and prevent complications such as infection.

Diagnosis

The patient was diagnosed with stage III A DS and stage III ISS MM, specifically of the immunoglobulin G (λ) type. Diagnostic procedures included CT and MRI scans, bone marrow testing through flow cytometry and morphology analysis, and laboratory tests to assess blood markers. The diagnosis of TEN was made based on the clinical presentation, skin biopsy, and exclusion of other potential causes.

Outcomes

With the implemented interventions, the patient's condition gradually improved, and the rash resolved without any residual scarring. The patient's skin and mucosa healed, blood markers improved, and bone pain was relieved. The patient was discharged within a month of receiving the final treatment with bortezomib and dexamethasone. The patient got partial response(PR) of multiple myeloma.

Lessons

Drug-induced SJS/TEN is more prevalent in Asian populations, potentially due to differences in human leukocyte antigen (HLA) alleles. The use of systemic corticosteroid therapy in SJS/TEN cases is controversial due to the potential risks of immune suppression and complications. Balancing the immune response to prevent SJS/TEN while maintaining an effective cytotoxic immune response for tumor control remains a challenge. Lenalidomide, an immunomodulatory agent, can enhance antitumor immune responses but also contribute to the pathogenesis of SJS/TEN. Increased awareness of HLA variations and frequently mutated genes in different malignancies can help prevent SJS/TEN and improve patient outcomes.

Cutaneous adverse reactions to lenalidomide

Lenalidomide is an immunomodulatory drug (IMiD) used principally in the treatment of multiple myeloma (MM), myelodysplastic syndromes (MS) and amyloidosis. Adverse reactions related to lenalidomide include myelosuppression (mainly neutropenia but also thrombocytopenia), gastrointestinal problems, skin eruption, atrial fibrillation and asthenia, decreased peripheral blood stem cell yield during stem cell collection, venous thromboembolism, and secondary malignances. In this review we focused our attention on the cutaneous adverse reactions to lenalidomide.