Abstract 5044
Background
Cisplatin is a widely used chemotherapeutic agent for multiple indications. Unfortunately, in a substantial set of patients treated with cisplatin acute kidney injury (AKI) occurs. A recent case report suggested single nucleotide polymorphisms (SNPs) in the COMT gene might be associated with increased cisplatin-induced nephrotoxicity (de Jong et al., BJCP, 2017). Here, we assessed the association of 3 SNPs in this gene with cisplatin-induced nephrotoxicity in our patient population.
Methods
Whole blood samples and serum creatinine concentrations (Scr) of 556 patients who received cisplatin between 2005-2019 were available. The 1947 G>A (Val158Met, rs4680), c.615 + 310 C>T (rs4646316) and c.616 – 367 C>T (rs9332377) SNPs were associated with AKI (CTCAE v4.03) using Fisher’s exact test and difference in Scr up to 2 weeks prior to and up to 6 weeks after cisplatin treatment was described.
Results
Median Scr at baseline was 70 μmol/l (inter quartile range (IQR) 59-81). Up to six weeks after the start of cisplatin treatment the median increased to 81 μmol/l (IQR 69-96). The presence of a variant of c.615 + 310C>T was associated with an increased occurrence of AKI ≥ grade 3 toxicity in patients carrying a homozygous variant (Var) compared to wildtype (WT) patients. AKI grade ≥ 3 occurred in 4 out of 31 (13%) homozygous variant patients against 6 out of 317 (2%) patients carrying wildtype alleles (p = 0.005) after correction for age in a multivariable model. Dehydration occurred in 14 of the 16 patients with AKI grade 3 (3 of 4 WT, 6 of 6 HT and 5 of 6 Var) and likely is a confounding factor. The remaining SNPs were not significantly associated with AKI or difference in Scr.
Conclusions
This study showed that variation in COMT c.615 + 310 C>T (rs4646316) potentially affects the development of AKI grade ≥3, although these results appear to be confounded by dehydration. Therefore, the value of this finding for daily practice is currently unclear and needs to be explored in a prospective setting.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
R.H.J. Mathijssen.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
Resources from the same session
4097 - Targeting NRG1-fusions in multiple tumour types: Afatinib as a novel potential treatment option
Presenter: Stephen V Liu
Session: Poster Display session 3
Resources:
Abstract
1129 - Aspirin and Ticagrelor for the prevention of tumour cell induced platelet aggregation
Presenter: Meera Chauhan
Session: Poster Display session 3
Resources:
Abstract
4514 - Pharmacokinetic/ pharmacodynamic (PK/PD) exposure-response characterization of GSK3359609 (GSK609) from INDUCE-1, a phase I open-label study
Presenter: Michele Maio
Session: Poster Display session 3
Resources:
Abstract
5169 - In vitro functional interrogation of viable Circulating Tumor Associated Cells (C-TACs) for evaluating Platin resistance.
Presenter: Stefan Schuster
Session: Poster Display session 3
Resources:
Abstract
5827 - Targeting ARG2 as a novel therapeutic approach for cancer
Presenter: Marcin Grzybowski
Session: Poster Display session 3
Resources:
Abstract
3129 - MPS1 and PLK1 as new therapy targets in TP53 mutated solid tumors
Presenter: Balazs Gyorffy
Session: Poster Display session 3
Resources:
Abstract
2129 - The Tumor Static Exposure (TSE) concept & utility: application to combination treatment of radiation and radiosensitizing agent in tumor xenograft experiments
Presenter: Samer El Bawab
Session: Poster Display session 3
Resources:
Abstract
1814 - General Methodology to Optimize Tumor Treating Fields Delivery Utilizing Numerical Simulations
Presenter: Noa Urman
Session: Poster Display session 3
Resources:
Abstract
3010 - The Australian Exceptional Responders Program: a National collaboration
Presenter: Megan Barnet
Session: Poster Display session 3
Resources:
Abstract
4489 - A Window of Opportunity Trial of Atorvastatin Targeting p53 Mutant Malignancies
Presenter: Joaquina Baranda
Session: Poster Display session 3
Resources:
Abstract