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Fertitta L, Bergqvist C, Sarin KY, Plotkin SR, Moertel C, Petersen AK, Cannon A, Berman Y, Pichard DC, Röhl C, Lessing A, Brizion B, Peiffer B, Ravaud P, Tran VT, Armand ML, Moryousef S, Ferkal S, Jannic A, Ezzedine K, Wolkenstein P. A core outcome domain set to assess cutaneous neurofibromas related to neurofibromatosis type 1 in clinical trials. Br J Dermatol 2024; 190:216-225. [PMID: 37877514 DOI: 10.1093/bjd/ljad397] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/19/2023] [Accepted: 10/14/2023] [Indexed: 10/26/2023]
Abstract
BACKGROUND Cutaneous neurofibromas (cNF) are considered one of the highest burdens of neurofibromatosis type 1 (NF1). To date, no medical treatment can cure cNF or prevent their development. In that context, there is an urgent need to prepare and standardize the methodology of future trials targeting cNF. OBJECTIVES The objective was to develop a core outcome domain set suitable for all clinical trials targeting NF1-associated cNF. METHODS The validated approach of this work consisted of a three-phase methodology: (i) generating the domains [systematic literature review (SLR) and qualitative studies]; (ii) agreeing (three-round international e-Delphi consensus process and working groups); and (iii) voting. RESULTS (i) The SLR and the qualitative studies (three types of focus groups and a French e-survey with 234 participants) resulted in a preliminary list of 31 candidate items and their corresponding definitions. (ii) A total of 229 individuals from 29 countries participated in the first round of the e-Delphi process: 71 patients, relatives or representatives (31.0%), 130 healthcare professionals (HCPs, 56.8%) and 28 researchers, representatives of a drug regulatory authority, industry or pharmaceutical company representatives or journal editors (12.2%). The overall participation rate was 74%. After round 2, five candidate items were excluded. Between rounds 2 and 3, international workshops were held to better understand the disagreements among stakeholders. This phase led to the identification of 19 items as outcome subdomains. (iii) The items were fused to create four outcome domains ('clinical assessment', 'daily life impact', 'patient satisfaction' and 'perception of health') and prioritized. The seven items that did not reach consensus were marked for the research agenda. The final core outcome domain set reached 100% of the votes of the steering committee members. CONCLUSIONS Although numerous outcomes can be explored in studies related to cNF in NF1, the present study offers four outcome domains that should be reported in all trial studies, agreed on by international patients, relatives and representatives of patients; HCPs; researchers, representatives of drug regulatory authorities or pharmaceutical companies and journal editors. The next step will include the development of a set of core outcome measurement instruments to further standardize how these outcomes should be assessed.
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Affiliation(s)
- Laura Fertitta
- Department of Dermatology
- INSERM, Centre d'Investigation Clinique 1430; National Referral Center for Neurofibromatoses, -Henri-Mondor Hospital, Assistance Publique-Hôpitaux Paris (AP-HP) , 94010 Créteil, France
- INSERM U955 , 94010, Créteil, France
| | - Christina Bergqvist
- Department of Dermatology
- INSERM, Centre d'Investigation Clinique 1430; National Referral Center for Neurofibromatoses, -Henri-Mondor Hospital, Assistance Publique-Hôpitaux Paris (AP-HP) , 94010 Créteil, France
| | - Kavita Y Sarin
- Department of Dermatology, Stanford Medicine, Stanford University, Redwood City, CA, USA
| | - Scott R Plotkin
- Department of Neurology and Cancer Center, Massachusetts General Hospital, Boston, MA, USA
| | | | - Andrea K Petersen
- Department of Rehabilitation and Development, Randall Children's Hospital at Legacy Emanuel Medical Center, Portland, OR, 97227, USA
| | - Ashley Cannon
- School of Health Professions, University of Alabama at Birmingham, Birmingham, AL, USA
- InformedDNA, Inc., St Petersburg, FL, USA
| | - Yemima Berman
- Clinical Genetics, Royal North Shore Hospital, St Leonards, NSW, Australia and University of Sydney, Sydney, Australia
| | - Dominique C Pichard
- Dermatology Branch, National Institutes of Arthritis, Musculoskeletal, and Skin Diseases
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute; National Institutes of Health, Bethesda, MD, USA
| | - Class Röhl
- NF Patients United - Global Network of NF Support Groups, Vienna, Austria
| | | | | | | | - Philippe Ravaud
- Center for Clinical Epidemiology, Hôtel-Dieu Hospital (AP-HP), Paris, France
- Université de Paris, CRESS, INSERM, INRA , F-75004 Paris, France
| | - Viet-Thi Tran
- Center for Clinical Epidemiology, Hôtel-Dieu Hospital (AP-HP), Paris, France
- Université de Paris, CRESS, INSERM, INRA , F-75004 Paris, France
| | | | | | - Salah Ferkal
- Department of Dermatology
- INSERM, Centre d'Investigation Clinique 1430; National Referral Center for Neurofibromatoses, -Henri-Mondor Hospital, Assistance Publique-Hôpitaux Paris (AP-HP) , 94010 Créteil, France
| | | | - Khaled Ezzedine
- Department of Dermatology
- INSERM, Centre d'Investigation Clinique 1430; National Referral Center for Neurofibromatoses, -Henri-Mondor Hospital, Assistance Publique-Hôpitaux Paris (AP-HP) , 94010 Créteil, France
- Université Paris-Est Créteil (UPEC), 94010 Créteil, France
| | - Pierre Wolkenstein
- Department of Dermatology
- INSERM, Centre d'Investigation Clinique 1430; National Referral Center for Neurofibromatoses, -Henri-Mondor Hospital, Assistance Publique-Hôpitaux Paris (AP-HP) , 94010 Créteil, France
- INSERM U955, 94010, Créteil, France
- Université Paris-Est Créteil (UPEC), 94010 Créteil, France
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Anderson R, Van Rensburg CE, Jooné GK, Lessing A. Auranofin inactivates phosphofructokinase in human neutrophils, leading to depletion of intracellular ATP and inhibition of superoxide generation and locomotion. Mol Pharmacol 1991; 40:427-34. [PMID: 1654515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The effects of the oral gold compound auranofin (AF), at concentrations well within the therapeutic range (0.04-1.5 microM), on human neutrophil functions and energy metabolism were investigated in vitro. At the concentrations tested, this agent had minimal effects on neutrophil degranulation and phagocytosis. However, AF caused dose-related inhibition of neutrophil chemotaxis and stimulus-activated generation of superoxide, which was evident at concentrations as low as 0.04 microM. Inhibition of superoxide generation by activated neutrophils increased with the time of preincubation of the cells with AF at 37 degrees. At low concentrations of AF (less than 0.75 microM), early events (within 5 min) involved in the transduction, assembly, and activity of the neutrophil superoxide-generating enzyme NADPH oxidase appeared to be normal, but the cells were unable to sustain the level of oxygen consumption, superoxide production, and NADPH oxidase activity of the corresponding drug-free control cells. On a mechanistic level, coincubation of neutrophils with AF was associated with decreased glycolytic activity and depletion of intracellular ATP, apparently due to drug-mediated, dose-related inactivation of the glycolytic enzyme phosphofructokinase (PFK). Using purified PFK, the triethylphosphine gold (TEPG) moiety of AF, but not AF per se, caused dose-related inactivation of enzyme activity. These data indicate that the potent inhibition of neutrophil migration and reactive oxidant generation observed during treatment of neutrophils with low, therapeutically attainable concentrations of AF is related to TEPG-mediated inactivation of PFK and consequent interference with cellular energy metabolism and functions.
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Affiliation(s)
- R Anderson
- Department of Immunology, University of Pretoria, Republic of South Africa
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