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Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
Published on: July 29, 2014
Multiple Loci modulate opioid therapy response for cancer pain
Antonella Galvan1, Frank Skorpen, Pål Klepstad
1Department of Predictive and Preventive Medicine, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy.
Summary
Genetic variations influence how cancer patients respond to opioid pain relief. Identifying specific single-nucleotide polymorphisms (SNPs) may lead to personalized opioid therapy for better pain management.
Area of Science:
- Pharmacogenomics
- Oncology
- Genetics
Background:
- Cancer pain management often involves opioid therapy.
- Patient responses to opioids vary significantly.
- Genetic factors are hypothesized to influence these differential responses.
Purpose of the Study:
- To investigate the role of genetic variations in individual responses to opioid therapy among cancer patients.
- To test the hypothesis that genetic factors control opioid drug efficacy in cancer pain.
Main Methods:
- A genome-wide association study (GWAS) was conducted using DNA pooling.
- One million single-nucleotide polymorphisms (SNPs) were analyzed in European cancer patients.
- Patients with extremely poor (pain relief ≤40%) or good (pain relief ≥90%) responses were selected.
Main Results:
- Eight SNPs were found to be significantly associated with pain relief in 1,008 cancer patients.
- SNP rs12948783, upstream of the RHBDF2 gene, showed the strongest association (P = 8.1 × 10⁻⁹).
- Functional annotation suggested involvement of genes related to neurologic system processes.
Conclusions:
- A panel of identified SNPs can modulate cancer patient responses to opioid therapy.
- These findings may facilitate personalized medicine approaches for cancer pain.
- Genetic profiling could optimize opioid selection and dosing for improved pain control.
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