Session: 721. Clinical Allogeneic Transplantation: Conditioning Regimens, Engraftment, and Acute Transplant Toxicities: Poster II
Hematology Disease Topics & Pathways:
Biological, HSCs, Adult, Diseases, Therapies, Cell Lineage, Lymphoid Malignancies, Study Population, Myeloid Malignancies, Clinically relevant, transplantation
Methods: We included patients with hematological malignancies who received allo-HCT between 2006 and 2018 in Kyoto University, Kyoto, Japan to evaluate the incidence and risk factors of AKI early after transplantation (before Day100). The incidence of AKI was defined according to Acute Kidney Injury Network (AKIN) classification and evaluated, considering early death as a competing risk. Administrative status of each antimicrobial agent was treated as a time-dependent covariate, and the synergetic effects on AKI by multiple agents in combination were evaluated as p for interaction.
Results: In total, 465 transplant cases (416 patients) were included. The median age at HCT was 49 years old (range, 17–70). Among these, 104 cases received a related-donor transplant (64 patients received bone marrow and 40 peripheral-blood stem cell grafts), 207 received a transplant from unrelated donors, and 154 received a single-unit cord-blood transplant. The median value for pre-transplant serum creatinine (sCr) was 0.6 (range, 0.20–1.68). The cumulative incidence of AKI at Day100 was 40.0%, and overall survival (OS) at 3 years after HCT was 43.5% in patients with AKI while 70.9% in those without AKI (hazard ratio [HR] = 2.63, 95% confidence interval = 1.95–3.55, p < 0.01). Being male and having a higher pre-transplant sCr were significant risk factors for AKI (HR = 1.53, p < 0.01 and HR = 4.21, p < 0.01, respectively). After HCT, 34 types of oral or intravenous antimicrobial agents (17 antibiotics, 6 antivirals, and 11 antifungals) were utilized across the entire cohort. A higher incidence of AKI was significantly associated with the use of intravenous ciprofloxacin, foscarnet (FCN), ganciclovir (GCV), liposomal amphotericin B (L-AMB), meropenem (MEPM), PIPC/TAZ, and VCM (p < 0.05). Next, we investigated the synergistic impacts of using anti-pseudomonal antibiotics and anti-methicillin resistant staphylococcus aureus (MRSA) agents, because empiric treatment of febrile neutropenia after HCT often relies on this combination, i.e. CFPM, PIPC/TAZ, or MEPM in combination with VCM or teicoplanin (TEIC). As a result, sole administration of VCM was associated with a higher incidence of AKI; this effect was enhanced when VCM was used in combination with PIPC/TAZ (HR = 3.03, p < 0.01 for VCM without PIPC/TAZ; HR = 4.38, p < 0.01 for VCM with PIPC/TAZ), indicating the existence of interaction between VCM and PIPC/TAZ. However, for the concomitant use of VCM plus CFPM or MEPM, no synergistic interaction was observed with regard to the increased incidence of AKI. In addition, administration of TEIC alone and any combination used with TEIC were not associated with an increased risk of AKI. An increased risk of AKI was also confirmed for the combination of MEPM plus GCV or FCN, and GCV plus L-AMB.
Conclusions: AKI was significantly associated with poorer OS, and specific antimicrobial combinations were suggested to increase the risk of AKI. Avoidance of such combinations should be considered to preserve renal function and to reduce AKI-related morbidity and mortality.
Disclosures: No relevant conflicts of interest to declare.
See more of: Oral and Poster Abstracts