The authors are to be complimented on a thoughtful and complete review of the application of the sentinel node paradigm to colorectal cancer. This paradigm is inherently quite different for colorectal cancer because, except for the occasional demonstration of variant anatomy, the technique will not alter the extent of surgery as it has done in melanoma and breast cancer.
The role of sentinel lymph node identification has been investigated over the past decade in a variety of malignancies. It has become part of standard care for melanoma. Its role in breast cancer is evolving, but with the completion of two large randomized clinical trials, it will probably be added to the surgical armamentarium for the management of most breast cancers. Studies have been proposed or are under way to evaluate sentinel node mapping in head and neck cancer, penile and vulvar cancer, and gastrointestinal cancers.
BOSTON-Excessive sun exposure is a known risk factor for the development of skin cancer, but sun exposure appears to have a protective effect against a variety of other cancers, according to speakers at a symposium on sunlight at the 168th National Meeting of the American Association for the Advancement of Science (AAAS).
NEW YORK-In patients with metastatic cutaneous melanoma who have already failed or are refractory to standard treatment, Allovectin-7, a targeted gene therapy using a nonviral delivery system, can induce both local and systemic responses in tumors injected weekly, results of a multicenter phase II study suggest.
NEW YORK-A potential chemopreventive agent against melanoma stopped metastatic spread in some patients in a phase I clinical trial, according to a report presented at the Chemotherapy Foundation Symposium XIX (abstract 69). The agent,
In 2001, the American Joint Committee on Cancer Melanoma Staging Committee proposed and created a new staging system for melanoma. This new system will become official in 2002, with the publication of the sixth
Intraoperative lymphatic mapping and sentinel lymphadenectomy has become an increasingly popular technique for staging the regional lymph nodes in early-stage melanoma. This operative technique allows for detailed pathologic analysis of the first (or sentinel) lymph node in direct connection with the primary tumor, and provides a unique opportunity for assessing potential immunologic interactions between the primary tumor and regional lymph node basin. We performed lymphatic mapping and sentinel lymphadenectomy on 25 patients with early-stage melanoma and resected an additional nonsentinel node in each case. Sentinel and nonsentinel nodes were evaluated by routine pathologic analysis. A portion of each node was processed for expression of the dendritic markers of activation CD80, CD86, and CD40, and their corresponding T-cell receptors CTLA-4 and CD28. Of 25 patients undergoing lymphatic mapping and sentinel lymphadenectomy, 20 (80%) had matched sentinel and nonsentinel nodes. A total of 26 matched lymph node sets were obtained: three pairs from one patient and two from an additional two patients. Reverse transcription polymerase chain reaction analyses of corresponding sections of the sentinel and nonsentinel nodes demonstrated a marked reduction in semiquantitative expression of CD80 (77%), CD86 (77%), and CD40 (85%), as well as CTLA-4 (88%) and CD28 (85%) in sentinel as compared to nonsentinel nodes. The diminished expression of the dendritic cell markers appeared to be unrelated to the B-cell (CD20) and T-cell (CD2) expression. Lymphatic mapping and sentinel lymphadenectomy allows for detailed pathologic and molecular characterization of sentinel nodes. Our results suggest a quantitative reduction in dendritic cell markers in sentinel as compared to nonsentinel nodes, which may be important in the immunologic interaction between the primary site and regional lymph node basin and may also serve as useful criteria for identifying sentinel nodes. [ONCOLOGY 16(Suppl 1):27-31, 2002]
MIAMI BEACH-Heat shock protein peptide complex-96 (HSPPC-96, Oncophage), an individualized cancer vaccine, produced complete responses in two patients with metastatic melanoma and long-term stable disease in several others during an Italian phase I-II trial.
SAN DIEGO--The results of a series of five free annual skin cancer screenings has demonstrated that community education and early detection are valuable tools in addressing cancer prevention, said Rosemary Giuliano, ARNP, MSN. She is national clinical research coordinator in the Cutaneous Oncology Program’s Department of Surgery at the H. Lee Moffitt Cancer Center & Research Institute, University of South Florida, Tampa.
A study published in the Journal of the American Academy of Dermatology (44:807-813, 2001) reported an almost 90%
NEW YORK-Among men over age 50 with an additional melanoma risk factor, diagnostic yield of melanoma screening is 1 in 219, data from the American Academy of Dermatology (AAD) National Skin Cancer Screening Program show. That yield is high, suggesting the potential cost-effectiveness of this intervention, according to Barbara A. Gilchrest, MD, professor and chairman of dermatology, Boston University.
NEW YORK-A variety of simple dietary interventions could prove effective in inhibiting carcinogenesis and reducing the incidence of skin cancers, said James M. Spencer, MD, associate professor of dermatology, Mount Sinai School of Medicine, New York.
NEW YORK-Many persons who apply sunscreen before spending time outdoors are nevertheless increasing their risk of skin cancer by not applying sunscreen frequently enough to prevent sunburn, recent studies involving skiers at high altitudes suggest.
WASHINGTON-Node-negative patients with intermediate-to-thick melanomas who underwent node staging by sentinel lymph node (SLN) biopsy had a significant survival advantage over those staged by elective lymph node dissection (ELND) or clinical examination, said Sophie Dessureault, MD, of the University of South Florida H. Lee Moffitt Cancer Center, Tampa. She spoke on behalf of the AJCC (American Joint Committee on Cancer) Melanoma Staging Committee.
Patients with both melanoma of the skin and positive lymph nodes may suffer regional relapse after lymphadenectomy, according to a report in the Annals of Surgical Oncology (8[2]:109-115, 2001). The report cites a study by John Gibbs, md,
FREEPORT, NY-In a phase III clinical trial of 30 patients with xeroderma pigmentosum, use of a topically applied DNA repair enzyme (T4N5 liposome lotion) for 1 year reduced the incidence of basal cell carcinoma by 30% and actinic keratoses by 68%, compared with placebo.
VENICE, Italy-Adjuvant therapy with the investigational vaccine Melacine helps prevent relapses in patients with stage IIA melanoma, investigators from the Southwest Oncology Group (SWOG) 9035 Study Group announced at the Fifth World Conference on Melanoma. Mela-cine, being developed by Corixa (Seattle), consists of a mixture of allogeneic melanoma cell lysates plus an immunologic adjuvant (Detox).
NEW YORK-An antisense drug that targets a protein that interferes with the actions of chemotherapeutic agents is entering phase III trials, said Raymond P. Warrell, Jr., MD, president and chief executive officer, Genta Inc., Berkeley Heights, New Jersey.
NEW YORK-For some stage IV melanoma patients who achieve only a partial response or stable disease on a regimen of biochemotherapy, a maintenance strategy using interleukin-2 (IL-2) may prolong survival and in some instances produce durable complete responses, California researchers have discovered. Steven J. O’Day, MD, associate director, medical oncology, John Wayne Cancer Institute at St. John’s Health Center, Santa Monica, reported the encouraging results of a pilot study of the biotherapy maintenance strategy at the Chemotherapy Foundation Symposium XVIII.
Sentinel lymph node biopsy has rapidly evolved into the standard of care for node-negative melanoma. It has been used at the Roswell Park Cancer Institute (RPCI) since 1993, and through periodic reviews of results, several modifications have been
BETHESDA, Md-The FDA’s Oncologic Drugs Advisory Committee (ODAC) declined in a unanimous vote to recommend that the agency approve histamine hydrochloride injections (Maxim Pharmaceuticals) for adjuvant use with interleukin-2 (IL-2) in the treatment of adult patients with advanced melanoma that has metastasized to the liver.
Although melanoma is a relatively chemoresistant malignancy, systemic chemotherapy remains the primary treatment for metastatic melanoma. The observation of vasculogenic mimicry in aggressive melanoma has
HAMBURG, Germany-Attempts to improve on interferon-based regimens for melanoma with alternative immuno-stimulant strategies are proving less successful than originally hoped, according to presentations at the 25th Congress of the European Society of Medical Oncology (ESMO).
SEATTLE-Melanoma patients with specific human leukocyte antigen (HLA) phenotypes may respond better to an investigational therapeutic vaccine known as Melacine than those without the phenotype, Vernon Sondak, MD, reported for the Southwest Oncology Group (SWOG) at the Society of Biological Therapy annual meeting.
Temozolomide, an oral alkylating agent, has shown activity against metastatic melanoma. The drug is schedule dependent and is given daily for 5 days. Altering the schedule may enhance its activity by depletion of the protein O6-alkylguanine-DNA
