Need to restage Korean melanoma patients following publication of the 8th edition of the American Joint Committee on Cancer staging manual.

BACKGROUND: The tumor, nodes and metastasis (TNM) classification and stage grouping have been updated in the 8th edition of the American Joint Committee on Cancer (AJCC) melanoma staging manual. However, restaging all the previous cases are not recommended. AIMS: The aims of the study were to investigate the necessity of restaging Korean melanoma patients staged by the previous edition of the AJCC manual. METHODS: Differences in the staging criteria of the 7th and 8th editions of the AJCC manual were identified. The staging of 276 primary melanomas from January 2011 to December 2018 was classified by both 7th and 8th editions of the manual and their differences were compared. RESULTS: Staging by 7th and 8th edition of the AJCC manual differed in 64 cases (23.2%). The pathological prognostic staging changed in 35 (12.7%), and 29 (10.5%) had changes in only TNM classification but not the pathological staging. None of the patients needed additional sentinel lymph node biopsy or systemic treatment as a result of restaging. Additional counseling was needed for the patients, because melanoma-specific survival was increased in the 8th edition. LIMITATIONS: This is a retrospective study with relatively small number of patients at a single tertiary center in Korea. CONCLUSION: Assessment of the need for additional sentinel lymph node biopsy or systemic treatment is recommended because of the latest changes in the AJCC melanoma staging manual. Although the restaging of previously staged melanomas is not significantly needed in our patients, still the differences in TNM classification and/or pathological prognostic staging suggest the need to separately recognize the patients previously staged by 7th edition and recently staged by 8th edition. Careful counseling about melanoma-specific survival is needed for Asian patients.

Malignant melanoma: Underlying epigenetic mechanisms.

Although malignant melanoma is not the most common type of skin cancer, it is the most aggressive and fatal type as it can spread out and metastasize progressively. Early diagnosis and interventions lead to improved patient survival. The incidence rate of melanoma is dramatically increasing, with a few newer therapeutic options available. Therefore, establishing a reliable genetic or epigenetic-based diagnostic and prognostic tool is really important. In this review, we highlight the underlying epigenetic mechanisms involved in melanoma. Furthermore, the epigenetic-based therapeutic options will be also discussed. One of the key areas of discussion will be microRNA which is a small, single-stranded RNA molecule that serves as a regulatory element and found to regulate nearly a third of human genes. MicroRNAs play a role in a wide range of diseases including cancer. In malignant cells, it regulates cell proliferation, invasion, and metastasis.

Cell wall fraction of Mycobacterium indicus pranii shows potential Th1 adjuvant activity.

Very few adjuvants inducing Th1 immune response have been developed and are under clinical investigation. Hence, there is the need to find an adjuvant that elicits strong Th1 immune response which should be safe when injected in the host along with vaccines. Mycobacterium indicus pranii (MIP), a non-pathogenic vaccine candidate, has shown strong immunomodulatory activity in leprosy/tuberculosis/cancer and in genital warts patients where its administration shifted the host immune response towards Th1 type. These findings prompted us to study the components of MIP in detail for their Th1 inducing property. Since mycobacterial cell wall is very rich in immunostimulatory components and is known to play important role in immune modulation, we investigated the activity of MIP cell wall using Ovalbumin antigen (OVA) as model antigen. 'Whole cell wall' (CW) and 'aqueous soluble cell wall fractions' (ACW) induced significant Th1 immune response while 'cell wall skeleton' (CWS) induced strong Th2 type of immune response. Finally, functional activity of fractions having Th1 inducing activity was evaluated in mouse model of melanoma. CW demonstrated significant anti-tumor activity similar to whole MIP. Anti-tumor activity of CW could be correlated with enhanced tumor antigen specific Th1 immune response observed in tumor draining lymph nodes.

Comparing cutaneous research funded by the US National Institutes of Health (NIH) with the US skin disease burden.

BACKGROUND: Disease burden should be an important component for guiding research funding. OBJECTIVE: We sought to examine the relationship between dermatologic research funded from 2012 to 2013 by the National Institutes of Health (NIH) and US skin disease burden as measured by disability-adjusted life years in the Global Burden of Disease 2010 study. METHODS: A cross-sectional analysis was independently performed by 2 researchers who matched projects from the 2012 to 2013 NIH Research Portfolio Online Reporting Tools with 15 skin conditions and their respective disability-adjusted life years from Global Burden of Disease 2010. RESULTS: The NIH funded 1108 projects spanning the 15 skin conditions. Melanoma received almost half of the total skin condition budget (49.5%). Melanoma, nonmelanoma skin cancer, and leprosy were funded above what would be suggested by their disease burden, whereas dermatitis, acne vulgaris, pruritus, urticaria, decubitus ulcer, fungal skin diseases, alopecia areata, cellulitis, and scabies appeared underfunded. Bacterial skin diseases, viral skin diseases, and psoriasis were well matched with disease burden. LIMITATIONS: Disease burden is one of many factors that may be used to guide priority-setting decisions. CONCLUSION: Skin disease burden measured by disability-adjusted life year metrics partially correlates with NIH funding prioritization. Comparing US disease burden with NIH funding suggests possible underfunded and overfunded skin diseases.

Large congenital melanocytic nevus with metastatic melanoma with a probable primary in the lung.

Large congenital melanocytic nevi (> 20 cm in greatest diameter) are very rare and are seen in approximately 1 in 20,000 newborns. The major risk these patients face is the development of neurocutaneous melanosis or malignant melanoma. We report a rare case of large congenital melanocytic nevus with metastatic melanoma in a 40-year-old woman. In this case, though the primary was not established with certainty, on the basis of clinical course and radiological evaluation of various organs, we presume that the primary could be in the lung.