Global clinical experience with adjuvant oxaliplatin/5-fluorouracil (5-FU)-based chemotherapy for colon cancer: Outcomes of the ACCElox registry

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Background: The ACCElox registry assessed the therapeutic management of early stage colon cancer with oxaliplatin/5-FU-based regimen and duration of adjuvant chemotherapy in current clinical practice. Methods: Newly diagnosed patients (N=1,548) with stage II or III colon cancer, who had undergone complete resection of the primary tumor and treated with at least one dose of "oxaliplatin" were enrolled in this prospective observational study (Feb-2006–Jul-2008) and followed up till 36 months post-treatment. Results: 72.7% and 27.3% of the patients were diagnosed with stage III and stage II colon cancer, respectively. 1,152 (74.4%) patients completed the prescribed chemotherapy. The most frequent causes of discontinuation were refusal (9.0%), adverse events (AEs) (8.1%) or relapse/recurrence of disease (3.6%). Overall, 1,512 (97.6%) patients received at least one cycle of oxaliplatin regimen. Treatment delay occurred in 1,013 patients (67%), mainly attributed to AEs (40.9%) and personal inconvenience (35.5%). During the 3-year follow-up period disease relapse/recurrence occurred in 285 (18.4%) patients with similar rates in the three groups (FOLFOX: 18.1%, FLOX: 19%, and XELOX: 18.6%). Overall number of deaths reported at the end of 3- year study period was 72 (4.7%). Majority of AEs reported during treatment were of grade 1–2 and the most common ones were neutropenia (63.9%), thrombocytopenia (23.3%), diarrhea (9.7%), sensory neuropathy (4.5%) and infection (2.6%). Sensory neuropathy was the most frequent AEs reported at 6 and 12 months of post-treatment follow-up. Conclusions: A majority of the patients completed the prescribed oxaliplatin/5-FU regimen. No unexpected AEs were reported. Our results confirm the favorable benefit/risk profile of oxaliplatin/5-FU based regimens in clinical practice. [caption]Distribution and treatment outcomes.[caption] Clinical trial information: NCT01310972. [Table: see text]

International collaboration in personalized medicine for the treatment of advanced and drug-refractory cancers: Clinical application of human tumor primary culture analyses

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Background: Personalized oncology has advanced through genomic and proteomic platforms. BCR-abl; EGFr and ALK have provided drug-able targets and companion diagnostics in several diseases, yet many transforming events in humans are polygenic, complex and incompletely understood at a genomic level. Recognition that oncogenesis reflects changes in the cell and its micro environment has renewed interest in whole cell experimental models that capture native-state cell-cell, -stroma and -vascular signaling. Ex vivo analysis of programmed cell death (EVA/PCD) has been shown to correlate significantly with response, time to progression and survival (Nagourney, R. Curr. Treat Op Oncol, 2006).To explore EVA/PCD functional profiling in Brazil, hospital-based investigators, Centro de Genomas and Rational Therapeutics coordinated the transport of 67 surgical specimens for analyses. Methods: Dose-response curves using metabolic (ATP-content, mitochondrial) and morphologic endpoints, interpolated to LC50's and synergy by median-effect, were compared with databases to identify patient-specific profiles for cytotoxics, targeted agents and combinations. Reports provided day 7. Results: 62/67 (92%) provided adequate tumor for analysis; 39 male (58%); 28 (42%) female; 6 chemo-naive and 61 previously treated. Results provided for < 8 drugs in 14/62 (22%); 8-16 drugs in 34/62 (54%) and > 16 drugs in 14/62 (22%). Of 22 tumor types, breast (8); Melanoma (8); NSCLC (8); ovary (7); pancreas (7) and sarcoma (4) predominated. EVA/PCD was used to select the most active combinations. Agents selected, response rates and durations are being tabulated and will be reported. Conclusions: The transport, processing and reporting of human tumor primary culture analyses is feasible, providing results in 92% of specimens and median of 12 drugs evaluated (range 4-32). Preliminary outcomes in these drug-refractory patients reveal that novel, often unexpected drug combinations (Everolimus and Lapatinib in triple negative breast) were identified and provided objective tumor responses, supporting EVA/PCD in therapy selection (personalized therapy) and drug development.

Identifying important breast cancer control strategies in Asia, Latin America and the Middle East/North Africa

BACKGROUND

Breast cancer is the most frequent cause of cancer death in women worldwide, but global disparities in breast cancer control persist, due to a lack of a comprehensive breast cancer control strategy in many countries.

OBJECTIVES

To identify and compare the need for breast cancer control strategies in Asia, Latin America and the Middle East/North Africa and to develop a common framework to guide the development of national breast cancer control strategies.

METHODS

Data were derived from open-ended, semi-structured interviews conducted in 2007 with 221 clinicians, policy makers, and patient advocates; stratified across Asia (n = 97), Latin America (n = 46), the Middle East/North Africa (ME/NA) (n = 39) and Australia and Canada (n = 39). Respondents were identified using purposive and snowballing sampling. Interpretation of the data utilized interpretive phenomenological analysis where transcripts and field notes were coded and analyzed and common themes were identified. Analysis of regional variation was conducted based on the frequency of discussion and the writing of the manuscript followed the RATS guidelines.

RESULTS

Analysis revealed four major themes that form the foundation for developing national breast cancer control strategies: 1) building capacity; 2) developing evidence; 3) removing barriers; and 4) promoting advocacy - each specified across five sub-ordinate dimensions. The propensity to discuss most dimensions was similar across regions, but managing advocacy was discussed more frequently (p = 0.004) and organized advocacy was discussed less frequently (p < 0.001) in Australia and Canada.

CONCLUSIONS

This unique research identified common themes for the development of breast cancer control strategies, grounded in the experience of local practitioners, policy makers and advocacy leaders across diverse regions. Future research should be aimed at gathering a wider array of experiences, including those of patients.

Final version of 2009 AJCC melanoma staging and classification

PURPOSE

To revise the staging system for cutaneous melanoma on the basis of data from an expanded American Joint Committee on Cancer (AJCC) Melanoma Staging Database.

METHODS

The melanoma staging recommendations were made on the basis of a multivariate analysis of 30,946 patients with stages I, II, and III melanoma and 7,972 patients with stage IV melanoma to revise and clarify TNM classifications and stage grouping criteria.

RESULTS

Findings and new definitions include the following: (1) in patients with localized melanoma, tumor thickness, mitotic rate (histologically defined as mitoses/mm(2)), and ulceration were the most dominant prognostic factors. (2) Mitotic rate replaces level of invasion as a primary criterion for defining T1b melanomas. (3) Among the 3,307 patients with regional metastases, components that defined the N category were the number of metastatic nodes, tumor burden, and ulceration of the primary melanoma. (4) For staging purposes, all patients with microscopic nodal metastases, regardless of extent of tumor burden, are classified as stage III. Micrometastases detected by immunohistochemistry are specifically included. (5) On the basis of a multivariate analysis of patients with distant metastases, the two dominant components in defining the M category continue to be the site of distant metastases (nonvisceral v lung v all other visceral metastatic sites) and an elevated serum lactate dehydrogenase level.

CONCLUSION

Using an evidence-based approach, revisions to the AJCC melanoma staging system have been made that reflect our improved understanding of this disease. These revisions will be formally incorporated into the seventh edition (2009) of the AJCC Cancer Staging Manual and implemented by early 2010.

Electrochemical therapy to treat cancer (in vivo treatment)

The aim of this paper is to present the evaluations and results attained by our research group from the clinical applications of Electrochemical Therapy (EChT in short) on tumors, specifically of cats and dogs. Our in vivo results indicate that EChT is an effective cancer treatment. Application of EChT in human beings was approved by National Health Surveillance Agency, which is linked to the Brazilian Ministry of Health. To make EChT available for cancer patients in the Brazil, basic studies were conducted and a Phase I clinical trial was started.

Dendritic cells derived from metastatic cancer patients vaccinated with allogeneic dendritic cell-autologous tumor cell hybrids express more CD86 and induce higher levels of interferon-gamma in mixed lymphocyte reactions

Dendritic cells (DCs) are highly effective antigen-presenting cells that, when derived from cancer patients, seem to be functionally deficient. Herein, we show that vaccination with allogeneic DC-autologous tumor cell hybrids affects the phenotype and improves the function of monocyte-derived DCs (Mo-DCs) from cancer patients. Mononuclear cells were isolated from patients' peripheral blood by density gradient centrifugation, and adherent cells were cultured in medium containing GM-CSF plus IL-4 and, after 5 days, TNF-alpha. After 2 more days, Mo-DCs were harvested and their CD80, CD86, and CD83 expression was assessed by flow cytometry. They were also used as stimulators in mixed lymphocyte reactions (MLR), where IFN-gamma production was measured by ELISA. Mo-DCs from unvaccinated patients expressed significantly lower levels of CD86, and tended to express lower levels of CD83 than Mo-DCs from healthy donors. However, Mo-DCs generated after hybrid cell vaccination presented increased expression of the same markers and induced significantly higher levels of IFN-gamma in MLR. These results indicate that the use of allogeneic DC-based cancer vaccines induces recovery of DC function in metastatic cancer patients and, therefore, could precede the use of autologous DCs for vaccine preparation. Such an approach could be relevant and should be investigated in clinical trials.

Dendritic cell-tumor cell hybrid vaccination for metastatic cancer

Dendritic cells are the most potent antigen-presenting cells, and the possibility of their use for cancer vaccination has renewed the interest in this therapeutic modality. Nevertheless, the ideal immunization protocol with these cells has not been described yet. In this paper we describe the preliminary results of a protocol using autologous tumor and allogeneic dendritic hybrid cell vaccination every 6 weeks, for metastatic melanoma and renal cell carcinoma (RCC) patients. Thirty-five patients were enrolled between March 2001 and March 2003. Though all patients included presented with large tumor burdens and progressive diseases, 71% of them experienced stability after vaccination, with durations up to 19 months. Among RCC patients 3/22 (14%) presented objective responses. The median time to progression was 4 months for melanoma and 5.7 months for RCC patients; no significant untoward effects were noted. Furthermore, immune function, as evaluated by cutaneous delayed-type hypersensitivity reactions to recall antigens and by peripheral blood proliferative responses to tumor-specific and nonspecific stimuli, presented a clear tendency to recover in vaccinated patients. These data indicate that dendritic cell-tumor cell hybrid vaccination affects the natural history of advanced cancer and provide support for its study in less advanced patients, who should, more likely, benefit even more from this approach.

Management of metastatic cutaneous melanoma

The results of treatment for metastatic melanoma remain disappointing. Single-agent chemotherapy produces response rates ranging from 8% to 15%, and combination chemotherapy, from 10% to 30%. However, these responses are usually not durable. Immunotherapy, particularly high-dose interleukin (IL)-2 (Proleukin), has also shown a low response rate of approximately 15%, although it is often long-lasting. In fact, a small but finite cure rate of about 5% has been reported with high-dose IL-2. Phase II studies of the combination of cisplatin-based chemotherapy with IL-2 and interferon-alfa, referred to as biochemotherapy, have shown overall response rates ranging from 40% to 60%, with durable complete remissions in approximately 8% to 10% of patients. Although the results of the phase II single-institution studies were encouraging, phase III multicenter studies have reported conflicting results, which overall have been predominantly negative. Various factors probably explain these discrepancies including different biochemotherapy regimens, patient selection, and, most importantly, "physician selection." Novel strategies are clearly needed, and the most encouraging ones for the near future include high-dose IL-2 in combination with adoptive transfer of selected tumor-reactive T cells after nonmyeloablative regimens, BRAF inhibitors in combination with chemotherapy, and the combination of chemotherapeutic agents and biochemotherapy with oblimersen sodium (Genasense).

An evidence-based staging system for cutaneous melanoma

A completely revised staging system for cutaneous melanoma was implemented in 2003. The changes were validated with a prognostic factors analysis involving 17,600 melanoma patients from prospective databases. This major collaborative study of predicting melanoma outcome was conducted specifically for this project, and the results were used to finalize the criteria for this evidence-based staging system. In fact, this was the largest prognostic factors analysis of prospectively followed melanoma patients ever conducted. Important results that shaped the staging criteria involved both the tumor-node-metastasis (TNM) criteria and stage grouping for all four stages of melanoma. Major changes in the staging include: (1) melanoma thickness and ulceration are the dominant predictors of survival in patients with localized melanoma (Stages I and II); deeper level of invasion (ie, IV and V) was independently associated with reduced survival only in patients with thin or T1 melanomas. (2) The number of metastatic lymph nodes and the tumor burden were the most dominant predictors of survival in patients with Stage III melanoma; patients with metastatic nodes detected by palpation had a shorter survival compared with patients whose nodal metastases were first detected by sentinel node excision of clinically occult or "microscopic" metastases. (3) The site of distant metastases (nonvisceral versus lung versus all other visceral metastatic sites) and the presence of elevated serum lactate dehydrogenase (LDH) were the dominant predictors of outcome in patients with Stage IV or distant metastases. (4) An upstaging was implemented for all patients with Stage I, II, and III disease when a primary melanoma is ulcerated by histopathological criteria. (5) Satellite metastases around a primary melanoma and in-transit metastases were merged into a single staging entity that is grouped into Stage III disease. (6) A new convention was implemented for defining clinical and pathological staging so as to take into account the new staging information gained from lymphatic mapping and sentinel node biopsy.

New TNM melanoma staging system: linking biology and natural history to clinical outcomes

The American Joint Committee on Cancer (AJCC) implemented major revisions of the melanoma TNM and stage grouping criteria in the recently published 6th edition of the Staging Manual. The new staging system better reflects independent prognostic factors that are used in clinical trials and in reporting the outcomes of various melanoma treatment modalities. Major revisions include: 1) melanoma thickness and ulceration but not level of invasion to be used in the T classification, 2) the number of metastatic lymph nodes rather than their gross dimensions and the delineation of microscopic vs. macroscopic nodal metastases to be used in the N classification, 3) the site of distant metastases and the presence of elevated serum lactic dehydrogenase (LDH) to be used in the M classification, 4) an upstaging of all patients with Stage I, II, and III disease when a primary melanoma is ulcerated, 5) a merging of satellite metastases around a primary melanoma and in transit metastases into a single staging entity that is grouped into Stage III disease, and 6) a new convention for defining clinical and pathological staging so as to take into account the new staging information gained from intraoperative lymphatic mapping and sentinel node biopsy.

Biochemotherapy for advanced melanoma

The combination of cisplatin-based chemotherapy with interleukin-2 and interferon-alpha, referred to as biochemotherapy or chemoimmunotherapy, has shown promising antitumor activity in patients with metastatic melanoma. Phase II studies have reported overall response rates ranging from 40 to 60%, with durable complete remissions in approximately 10% of the patients. Although the results of the phase II single institutional studies were encouraging, phase III studies have not shown consistent results. Many factors may explain this finding including small number of patients, lack of a proper phase II study to define the antitumor activity of a given biochemotherapy regimen, and principally lack of a multicenter phase II study to better define the response rate as well as to gain experience with an IL-2-based regimen in the community setting prior to conducting a phase III trial. Large randomized studies are ongoing and should better clarify the long-term impact of biochemotherapy on survival in patients with advanced melanoma.

Association of carmustine with a lipid emulsion: in vitro, in vivo and preliminary studies in cancer patients

PURPOSE

We had previously shown in acute leukemia and in breast and ovary carcinoma patients that a cholesterol-rich emulsion (LDE) that binds to receptors for low-density lipoprotein (LDL) may concentrate in neoplastic tissues. In this study, the potential of LDE as a carrier for anticancer drugs was investigated.

METHODS

LDE was associated with carmustine, and the cytotoxicity of the LDE-carmustine complex was studied in a neoplastic cell line and its biodistribution was studied in mice. The plasma kinetics of the complex and its uptake by tumor and normal tissue were determined in cancer patients. Finally, an exploratory clinical study to determine the toxicity profile of LDE-carmustine at escalating dose levels was conducted in 42 advanced cancer patients refractory to conventional chemotherapy.

RESULTS

Carmustine formed a stable association with LDE. The pharmacological action of carmustine, as tested in cancer cells, was not diminished by association with LDE compared with the free drug and was indeed mediated by the LDL receptor. The biodistribution in mice and plasma kinetics in patients of the emulsion were not changed by association of the drug. The uptake of LDE-carmustine by tumor was severalfold greater than the uptake by the corresponding normal tissue. Finally, patients treated with LDE-carmustine showed negligible side effects even at very high dose levels.

CONCLUSIONS

Association with LDE preserves the cytotoxicity of carmustine and markedly diminishes its side effects.

Sequential biochemotherapy versus chemotherapy for metastatic melanoma: results from a phase III randomized trial

PURPOSE

The addition of cytokines to chemotherapy has produced encouraging results in advanced melanoma. In this phase III trial, we compared the effects of chemotherapy (cisplatin, vinblastine, and dacarbazine [CVD]) with those of sequential biochemotherapy consisting of CVD plus interleukin-2 and interferon alfa-2b.

PATIENTS AND METHODS

Metastatic melanoma patients who had not previously received chemotherapy were stratified by prognostic factors and given chemotherapy or biochemotherapy. CVD consisted of dacarbazine (days 1 and 22) and cisplatin and vinblastine (days 1 to 4 and 22 to 25). Biochemotherapy involved CVD with vinblastine reduced 25% plus interleukin-2 by 24-hour continuous infusion (on days 5 to 8, 17 to 20, and 26 to 29) and interferon alfa-2b by subcutaneous injection (on days 5 to 9, 17 to 21, and 26 to 30). Response was assessed every 6 weeks.

RESULTS

Among 190 patients enrolled, 91 were assessable for biochemotherapy and 92 for chemotherapy. Ten percent of the patients were alive a median of 52 months from start of therapy. Response rates were 48% for biochemotherapy and 25% for chemotherapy (P =.001); six patients given biochemotherapy and two given chemotherapy had complete responses. Median time to progression (TTP) was 4.9 months for biochemotherapy and 2.4 months for chemotherapy (P =.008); median survival was 11.9 and 9.2 months, respectively (P =.06). The influence of treatment on TTP and survival was confirmed in multivariate analyses with other prognostic factors not included in the original stratification. Biochemotherapy produced substantially more constitutional, hemodynamic, and myelosuppressive toxic effects.

CONCLUSION

Cytokines substantially augment the antitumor activity of chemotherapy at the expense of considerable toxicity in patients with metastatic melanoma.

Practical guidelines for the management of biochemotherapy-related toxicity in melanoma

The combination of cisplatin-based chemotherapy with interleukin 2 (IL-2) and IFN-alpha, referred to as biochemotherapy or chemoimmunotherapy, has shown promising antitumor activity in patients with metastatic melanoma. Phase II studies have reported overall response rates ranging from 40 to 60%, with durable complete remissions in approximately 10% of the patients. Toxicity, however, is often severe and can be life-threatening if the healthcare team is not familiar with toxicity management. In this report, we briefly describe the clinical results of the most effective biochemotherapy regimens and provide a detailed description and management of the most common toxic effects, with emphasis on the concurrent biochemotherapy program initially developed at M. D. Anderson Cancer Center and currently being tested in a slightly modified version in two large-scale Intergroup Phase III trials.

Final version of the American Joint Committee on Cancer staging system for cutaneous melanoma

PURPOSE

To revise the staging system for cutaneous melanoma under the auspices of the American Joint Committee on Cancer (AJCC).

MATERIALS AND METHODS

The prognostic factors analysis described in the companion publication (this issue), as well as evidence from the published literature, was used to assemble the tumor-node-metastasis criteria and stage grouping for the melanoma staging system.

RESULTS

Major changes include (1) melanoma thickness and ulceration but not level of invasion to be used in the T category (except for T1 melanomas); (2) the number of metastatic lymph nodes rather than their gross dimensions and the delineation of clinically occult (ie, microscopic) versus clinically apparent (ie, macroscopic) nodal metastases to be used in the N category; (3) the site of distant metastases and the presence of elevated serum lactic dehydrogenase to be used in the M category; (4) an upstaging of all patients with stage I, II, and III disease when a primary melanoma is ulcerated; (5) a merging of satellite metastases around a primary melanoma and in-transit metastases into a single staging entity that is grouped into stage III disease; and (6) a new convention for defining clinical and pathologic staging so as to take into account the staging information gained from intraoperative lymphatic mapping and sentinel node biopsy.

CONCLUSION

This revision will become official with publication of the sixth edition of the AJCC Cancer Staging Manual in the year 2002.

Inducible nitric oxide synthase and nitrotyrosine in human metastatic melanoma tumors correlate with poor survival

Despite recognition of the malignant potential of human melanomas, the mechanisms responsible for the pathobiological characteristics contributing to tumor growth, vascular invasiveness, and distant organ metastasis remain undefined. Recent studies have shown that various human tumors express an inducible form of nitric oxide synthase (iNOS) and nitrotyrosine (NT), which suggests a mechanistic role of tumor-associated nitric oxide (NO) in tumorigenesis. We investigated iNOS and NT expression by immunohistochemistry in 20 human metastatic melanoma tissue specimens specifically with respect to iNOS-expressing cell types in the tumor area, pathological and clinical response to systemic therapy, potential role as a prognostic indicator, and NT formation. Our results showed that melanoma cells from 12 of 20 tumors express iNOS, yet the expression of this molecule in the tumor did not correlate with pathological or clinical response to therapy. More importantly, iNOS and NT expression by the melanoma cells strongly correlated with poor survival in patients with stage 3 disease (P < 0.001 and P = 0.020, respectively), suggesting a pathway whereby iNOS might contribute to enhanced tumor progression. In conclusion, our findings strongly suggest that iNOS expression has potential to be considered as a prognostic factor and NO as a critical mediator of an aggressive tumor phenotype in human metastatic melanomas.

Classification and staging of melanoma

Although a standardized and uniformly accepted cancer staging system is an essential and fundamental requirement to enable meaningful comparisons across patient populations, the sometimes capricious biologic behavior of melanoma makes developing such a staging system particularly difficult. Since the earliest well-documented attempts at classifying patients with cutaneous melanoma were described more than 50 years ago, the identification of increasingly powerful prognostic factors has led to sequential modifications of the cutaneous melanoma staging system. The current AJCC staging system is based on relatively well-established prognostic factors; however, several recent reports have identified additional prognostic factors not included in the current system, and other studies support the re-evaluation of some of the currently employed staging criteria. Some of the more controversial areas include the relevance of level of invasion versus tumor thickness, optimal cutoffs for tumor thickness, importance of ulceration, the grouping of satellites with in-transit metastases, the inclusion of microsatellites and local recurrences as a separate staging criterion, the replacement of size of nodal mass with number of positive nodes, the importance of nodal metastases in more than one nodal basin, and the prognostic significance of distant metastases. Future modifications of the staging system are anticipated to better incorporate these observations. Stage-specific staging recommendations for the patient with melanoma provide the clinician with a framework to most efficiently assess extent of disease in an era of cost-conscious clinical practice. In the asymptomatic patient with primary melanoma (stage I or II), we recommend a chest roentgenogram and evaluation of alkaline phosphatase and LDH levels; extensive radiologic evaluations are not indicated, because the rate of detection in this population is extremely low. Additional staging information should also be obtained by the technique of lymphatic mapping and sentinel lymphadenectomy. For patients with local-regional disease (stage III, satellites, and local recurrence), a selective approach to imaging studies is warranted. For this patient population, we recommend complete blood count, liver function tests including alkaline phosphatase and LDH, a chest roentgenogram, and a CT scan of the abdomen. Although the yield of these tests, particularly CT of the abdomen, in detecting distant metastases in asymptomatic patients is low, they may identify false-positive abnormalities and provide an important baseline for future studies in this high-risk population. For patients with disease below the waist or in the head and neck region, we recommend CT of the pelvis and CT of the neck, respectively. Additional studies should be done only if clinically indicated. Finally, patients with known systemic disease (stage IV) should be more comprehensively evaluated, because the likelihood of detecting asymptomatic metastases is higher. Accordingly, in addition to the work-up outlined previously for stage III patients, we also perform a CT scan of the chest and MR imaging of the brain; other studies (e.g., bone scan, gastrointestinal series) are performed on the basis of symptoms.

Unexpected cytokines in serum of malignant melanoma patients during sequential biochemotherapy

Biochemotherapy, which combines traditional chemotherapy with immune modulating biologicals, produces an unexpectedly high response rate (>50%) in advanced melanoma patients. We hypothesize that immunological mechanism(s) are responsible for the increased response rate, and particularly that macrophage activation is involved in tumor reduction. Patients were randomized to receive chemotherapy, composed of cisplatin, vinblastine, and dacarbazine (CVD), or biochemotherapy, which is CVD followed by interleukin (IL)-2 and IFN-alpha2b (CVD-BIO). Laboratory analysis was performed on sera from 41 patients from each arm. Measurements of macrophage activation (neopterin), nitric oxide production (nitrite), and tumor necrosis factor-alpha (TNF-alpha), IL-1alpha, IL-1beta, IFN-gamma, IL-6, IL-10, and soluble IL-2 receptor (sIL-2R) were performed. Six of the nine biological responses (nitrite, neopterin, IFN-gamma, IL-6, soluble IL-2R, and IL-10) significantly (P < 0.0002) increased in the CVD-BIO patients but not in the CVD patients. The increased IL-6 (P = 0.04) and IL-10 (P = 0.05) correlated with patient response, but only when the minor responders were included in the analysis. Evidence of macrophage activation was found in CVD-BIO patients and not in those receiving CVD alone. In addition, an unusual cytokine elaboration composed of IL-6, IFN-gamma, IL-10, nitrite, neopterin, and sIL-2R, but not the expected TNF-alpha and IL-1, was detected. A trend of higher increase in IL-6 and IL-10 in patients having clinical response was found, suggesting an incomplete Th2 pattern of cytokine elaboration. These data show that macrophage activation does not appear to be critical in the response to CVD-BIO, but that IL-10 and IL-6 induced by the BIO component of the CVD-BIO were associated with tumor regression, and that their biology should be pursued further in the analysis of mechanism(s) of response.

Clinical classification and staging

The identification of increasingly powerful prognostic factors has led to sequential modifications of the cutaneous melanoma staging system. Changes in the staging system are anticipated as more refined prognostic factors are identified. This article provides an overview of the system, including a brief history and an introduction to recent advances in staging of patients with primary melanoma (i.e., sentinel lymphadenectomy). Practical recommendations for a stage-specific workup for the patient, which are especially important given the need for quality care in an increasingly cost-conscious environment, are provided.

The changing prognosis of melanoma

Cutaneous melanoma is a significant and increasing clinical problem. Knowing accurately the prognosis in a given patient is critical for treatment decisions and for optimal patient education. In this article we discuss the most current information regarding prognostic factors in early-stage and advanced malignant melanoma. Tumor thickness and ulceration are the most important predictors for primary melanoma. Number of positive lymph nodes is the most powerful predictor for stage III patients, and sites of disease and lactase dehydrogenase levels are the most useful predictors in metastatic disease.

A phase II study of "decrescendo" interleukin-2 plus interferon-alpha-2a in patients with progressive metastatic melanoma after chemotherapy

BACKGROUND

The authors tested a biotherapy regimen involving recombinant interferon-alpha-2a (rIFN-alpha-2a) and recombinant human interleukin-2 (rhIL-2), given in a "decrescendo" schedule over 5 days, for its activity and toxicity in 21 patients who previously had received chemotherapy for advanced melanoma.

METHODS

Patients (15 men and 6 women) were given intravenous rhIL-2 at a dose of 18 MIU/m(2) over 6 hours, followed by 18 MIU/m(2) over 12 hours, then 18 MIU/m(2) over 24 hours, and finally 4.5 MIU/m(2)/day for 3 consecutive days. rIFN-alpha-2a (10 MIU/m(2)) was given subcutaneously on Days 1-5. Courses were repeated every 4 weeks. Tumor sites were measured every 8 weeks. Toxicity was recorded using National Cancer Institute Common Toxicity Criteria.

RESULTS

No major objective responses were noted. The median number of courses given was two. The median time to progression was 2 months and the median survival was 6 months (range, 2-25 months). However, 2 patients with melanoma involving >/= 2 visceral organs (1 with a high baseline serum lactate dehydrogenase level) and a third with soft tissue metastases achieved durable control of disease and were alive a median of 30+ months later. A fourth patient had a palliative response with reversal of melanosis and a survival of 7 months. This regimen was well tolerated and resulted in no serious long term adverse effects.

CONCLUSIONS

The response rate for this regimen was no greater than 10% with Type I and II errors each not exceeding 10%. Nevertheless, occasional durable control of disease and the nonoverlapping toxicity profile with prior chemotherapy support consideration of this regimen in these patients who have limited second-line treatment options.