Background
There is limited information on the outcome when organs other than heart or kidneys are involved by immunoglobulin light chain amyloidosis (AL).
Methods
We report the outcome of 53 patients with AL with gastrointestinal (GI), peripheral nerve (PN), liver, lung or soft tissue involvement, who underwent high-dose chemotherapy and autologous hematopoietic stem cell transplantation (auto- HCT) at our institution between 1997 and 2013.
Results
Median age at auto-HCT was 56 years (range, 35-74). One, two, or three or four organs were involved in 43%, 22%, 28% and 4% of patients, respectively. Concurrent cardiac, renal or both were involved in 24 (45%) patients. Forty-six patients received induction therapy before auto-HCT. The 100-day and 1-year treatment-related mortality (TRM) were 3.8% (n=2), and 7.5% (n=4), respectively. Forty-one (80%) patients achieved a HR. Organ response at 1 year after auto-HCT was seen in 23 (57%) of the 40 evaluable patients. With a median follow-up of 24 months, the median progression free survival (PFS) and overall survival (OS) were 36 and 73 months, respectively.
Conclusion
Auto-HCT was associated with a low TRM, durable organ responses and a median OS of > 6years in selected patients with AL and GI, PN, liver, lung or soft tissue involvement.