Maroun Bou Zerdan, Allam Sabine, Chaulagain Chakra P
Department of Hematology-Oncology, Myeloma and Amyloidosis Program, Maroone Cancer Center, Cleveland Clinic Florida, Weston, FL, USA.
Department of Medicine, Faculty of Medicine, University of Balamand, Beirut, Lebanon.
Blood Res. 2022 Jun 30;57(2):106-116. doi: 10.5045/br.2022.2021227. Epub 2022 May 20.
The immunoglobulin light-chain amyloidosis is a multisystemic disease which manifests by damage to the vital organs by light chain-derived amyloid fibril. Traditionally, the treatment has been directed to the underlying plasma cell clone with or without high dose chemotherapy followed by autologous stem cell transplantation using melphalan based conditioning. Now with the approval of highly tolerable anti-CD38 monoclonal antibody daratumumab based anti-plasma cell therapy in 2021, high rates of hematologic complete responses are possible even in patients who are otherwise deemed not a candidate for autologous stem cell transplantation. However, despite the progress, there remains a limitation in the strategies to improve symptoms particularly in patients with advanced cardiac involvement, those with nephrotic syndrome and autonomic dysfunction due to underlying systemic AL amyloidosis. The symptoms can be an ordeal for the patients and their caregivers and effective strategies are urgently needed to address them. The supportive care is aimed to counteract the symptoms of the disease and the effects of the treatment on involved organs' function and preserve patients' quality of life. Here we discuss multidisciplinary approach in a system-based fashion to address the symptom management in this dreadful disease. In addition to achieving excellent anti-plasma cell disease control, using treatment directed to remove amyloid from the vital organs can theoretically hasten recovery of the involved organs thereby improving symptoms at a faster pace. Ongoing phase III clinical trials of CAEL-101 and Birtamimab will address this question.
免疫球蛋白轻链淀粉样变性是一种多系统疾病,其表现为轻链衍生的淀粉样原纤维对重要器官造成损害。传统上,治疗方法是针对潜在的浆细胞克隆,采用或不采用高剂量化疗,随后使用基于美法仑的预处理方案进行自体干细胞移植。2021年,基于高耐受性抗CD38单克隆抗体达雷妥尤单抗的抗浆细胞疗法获批,即使对于那些原本被认为不适合自体干细胞移植的患者,也有可能实现高比例的血液学完全缓解。然而,尽管取得了进展,但在改善症状的策略方面仍存在局限性,特别是对于那些有晚期心脏受累、患有肾病综合征以及因潜在系统性AL淀粉样变性而出现自主神经功能障碍的患者。这些症状对患者及其护理人员来说可能是一种折磨,迫切需要有效的策略来解决这些问题。支持性护理旨在对抗疾病症状以及治疗对受累器官功能的影响,并维持患者的生活质量。在此,我们以基于系统的方式讨论多学科方法,以解决这种可怕疾病的症状管理问题。除了实现对浆细胞疾病的出色控制外,使用旨在从重要器官中清除淀粉样蛋白的治疗方法理论上可以加速受累器官的恢复,从而更快地改善症状。正在进行的CAEL - 101和比他米单抗的III期临床试验将解决这个问题。