Active clinical trials for "Cancer Pain"

This is a Phase 3 study to assess the safety and efficacy of a single epidural administration of Resiniferatoxin versus standard of care for the treatment of intractable pain associated with cancer.

Cutaneous cancer-related pain is difficult to treat. These patients are often prescribed high systemic dosages of opioids. Yet, many patients continue to report pain while experiencing dose-limiting side effects. An alternative approach to systemic administration is to apply topical medications. The advantage of topical application is the potential of achieving good analgesia using low dosages with few, if any, systemic side effects. Current clinical data indicates, that topically applied morphine has an analgesic effect in patients with severe pain and that it may even improve wound healing. The clinical reports so far have been either case studies or double blind randomly controlled trials with a very small sample size of patients. There is still a great deal of information which is lacking about this modality of treatment regarding on the one hand, the mechanism of action and on the other, clinical issues. For example, is the mechanism of the effect actually peripheral? What is the adequate dose of analgesic medication for different types of skin conditions? Wound healing has not been quantified. We will apply morphine topically to skin wounds of cancer and evaluate the effect of the treatment on pain, side effects, quantify wound healing, quantify morphine and its metabolites in blood and urine. Should well controlled studies, demonstrate all or any of the peripheral effects of topical morphine, clinical application of this treatment modality would be possible. This could contribute towards better treatment of these patients, who have pain which is difficult to treat and can, at times, be intractable.

This study is to assess the efficacy and safety of a four-week treatment with intranasal esketamine (56 mg) twice a week combined with opioid analgesic and adjuvant standard therapy in the management of adult patients with severe and opioid refractory chronic cancer pain.

Many patients with cancer experience moderate to severe pain that requires treatment with strong opioids, of which oxycodone and morphine are examples, they are widely applied in clinical treatment because of sustained-released formulation can reduce dosing frequency. Goal of pain management is get adequate analgesia and minimize the adverse event at the same time, but in fact there are about 10%-30% patients can't get adequate analgesia because of intolerable adverse event. The common adverse event of Controlled-Release Oxycodone(CR Oxycodone ) are nausea (29.9%)、constipation （25.4%）、dizziness（22.4%） and vomit（11.9%），about 32.8% patients treatment was discontinued because of these adverse event. The peak concentration of opioid is related to adverse event, while the valley concentration is correlated to the analgesic effect. Therefore, if we keep the daily dose while increase the dose frequency so that reduce the single dose, it's will help to avoid intolerable adverse event caused by excessive opioid peak concentration and keep the opioid analgesia at the same time. It's a reasonable way to solve the side effects of opioid. In order to explore the effect of change the dosing frequency of CR Oxycodone to treat refractory pain, pre-experiment have done by several clinical centrals in Fujian province. Preliminary results show that for the patients who can't accept the current opioid dose because of intolerable side effect, changing the dosing frequency is a safe and effect way.

Pain control is a common and serious problem in cancer patients. Although WHO has developed a three-stage model of cancer pain management, 80% cancer patients still suffer moderate to severe pain in their daily life. When patients are with acute exacerbation or aggravate of pain, they usually visit the emergency department for more help. Acupuncture is a safe, low-invasive and economic treatment. And it has been world-wide used as a complementary therapy among patients with cancer. It can not only relieve pain in cancer patients, but also can reduce some of the side effects caused by some treatment. This study is aimed to evaluate the efficacy and safety of acupuncture in cancer patient with acute pain onset through emergency department with objective Traditional Chinese Medicine assessment.

Methadone is an opioid that has been used for over 80 years to treat various types of pain, including cancer pain. Despite its increasing popularity as a co-analgesic and first-line treatment for cancer pain, there remain some outstanding questions regarding its use in treating cancer pain, such as its efficacy compared to other opioids and its appropriateness as a first-line treatment. The investigators will conduct a Vanguard Randomized Clinical Trial (RCT) to estimate the efficacy of methadone compared to morphine for the treatment of a newly defined type of cancer pain, which the investigators have termed 'adenocarcinopathic' pain (ACPP).

Today, patients with cancer pain in need of opioids for moderate to severe pain get long-acting morphine twice a day and morphine tablets taken on demand in addition. This procedure might be based on the assumption that cancer pain is persistent, although the evidence to support whether this assumption applies to all cancer patients is lacking. Some cancer patients might not need a fixed dose of long-acting morphine. Because of rapid pain relief, the new fentanyl drugs open for the possibility to take an opioid on demand when pain occurs. A pilot study where 10 patients with cancer pain were treated with a rapid-acting fentanyl nasal spray taken on demand, showed that this treatment was apparently feasible and safe for these patients. This approach is studied further in NFCP-II. The participants will be treated with rapid-acting fentanyl nasal spray and long-acting morphine in a crossover study. The primary outcome will be patient satisfaction. The study will consist of a test dose of nasal fentanyl, a dose-finding phase and a treatment phase with either nasal fentanyl taken on demand or slow-released morphine taken twice a day. After 10 days of treatment there is a crossover and the opposite drug is used for the same participant. Morphine tablets can be taken on demand in all phases of the study. The participants will meet the investigator at inclusion, at the crossover and at the end of treatment. During the study, a diary is filled in by the participants every morning. Questions about pain and side effects are answered. Satisfaction is measured at the crossover and at end of treatment while preference is measured at the end of treatment.

The purpose of this study is to compare the effectiveness of an investigational drug versus placebo in the treatment of metastatic bone cancer pain in patients diagnosed with breast or prostate cancer and a bone neoplasm. Patients in the study will be taking opioids to treat moderate to severe pain for their bone metastases and will remain on their opioids during the entire course of the study.

Proportional dose of sublingual fentanyl tablet (Narco®) based on daily opioid requirement versus intravenous PCA for breakthrough cancer pain: A prospective, randomized, open-label, noninferiority trial.

Pain is one of the most burdensome symptoms associated with cancer and its treatment, and opioids are the cornerstone of clinical pain management in cancer patients. Yet, individual patient responses to opioids vary widely, and the patient's genotype contributes to this variability. Specifically, cytochrome P450 2D6 (CYP2D6) genotype has important relevance for response to opioid analgesics that depend on CYP2D6 for bioactivation. Poor metabolizers (PMs) have lower concentrations of active metabolites of codeine (morphine), tramadol (O-desmethyltramadol), oxycodone (oxymorphone), and hydrocodone (hydromorphone), compared to extensive metabolizers (EMs). Morphine and O-desmethyltramadol have 200-fold greater affinity for the µ-opioid receptor than the parent compound, whereas oxymorphone and hydromorphone have 40-fold and 10-fold higher receptor affinity compared to their parent compounds, respectively. Consequently, PMs may fail to derive pain relief from these opioids compared to EMs. Interestingly, the occurrence of side effects may not differ between PMs and EMs so that while PMs may get little to no pain relief from certain opioid analgesics, they may still experience troublesome adverse effects. Intermediate metabolizers (IMs) are also expected to have reduced analgesic response based on their significant reduction in enzyme activity. Conversely, individuals with the UM phenotype may have toxic concentrations of active opioid metabolites, with reports of life-threatening toxicity and death. The µ-opioid receptor gene (OPRM1) is the primary binding site for endogenous opioid peptides and opioid analgesics, and may have additional contributions to opioid response. The investigators propose to examine the effect of CYP2D6 genotype-guided pain management on cancer pain control in study participants and the additional effect of the OPRM1 genotype on response to opioids.