Peer Review History
| Original SubmissionJanuary 6, 2026 |
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-->PONE-D-25-68202-->-->Epidemiological Patterns of Melanoma in a Multi-ethnic Cohort in the United Arab Emirates: 2017-2025-->-->PLOS One Dear Dr. Mokhtar, Thank you for submitting your manuscript to PLOS ONE. After careful consideration, we feel that it has merit but does not fully meet PLOS ONE’s publication criteria as it currently stands. Therefore, we invite you to submit a revised version of the manuscript that addresses the points raised during the review process. Please submit your revised manuscript by Mar 29 2026 11:59PM. If you will need more time than this to complete your revisions, please reply to this message or contact the journal office at plosone@plos.org. When you're ready to submit your revision, log on to https://www.editorialmanager.com/pone/ and select the 'Submissions Needing Revision' folder to locate your manuscript file. Please include the following items when submitting your revised manuscript:-->
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Additional Editor Comments: REVIEWER 1 This manuscript provides valuable clinicopathological insights into cutaneous melanoma in a multi-ethnic cohort from the United Arab Emirates, a region with limited published data. The relatively large sample size, centralized histopathological confirmation, and analysis of sex- and subtype-specific tumor characteristics are notable strengths. Several issues should be addressed to improve scientific clarity and interpretability. First, the study design does not allow estimation of melanoma prevalence or incidence, as no population denominator is available. References to epidemiological burden or population-level measures should therefore be revised, with findings consistently framed as distributions and patterns among diagnosed cases. Second, the single-center, tertiary referral nature of the dataset introduces potential selection and referral bias, likely overrepresenting fair-skinned expatriates and individuals with greater healthcare access. This limitation should be more explicitly acknowledged, and conclusions regarding national representativeness should be appropriately tempered. Third, the multivariable logistic regression model includes Clark level as an independent predictor of Breslow thickness, although both variables reflect tumor depth and are biologically correlated. The very high odds ratios observed may therefore reflect intrinsic histopathological correlation rather than independent predictive value, and this should be justified or interpreted with caution. Importantly, several established melanoma risk factors were not captured, including skin phenotype or skin color, family history of melanoma, occupational or recreational ultraviolet exposure, and sunscreen use. The absence of these variables limits interpretation of demographic patterns and restricts the ability to contextualize public health recommendations. Finally, while the discussion emphasizes the need for awareness and screening initiatives, the lack of data on sun-protective behaviors and screening practices necessitates framing these conclusions as contextual and hypothesis-generating rather than directly supported by the study findings. Addressing these points will substantially strengthen the rigor, transparency, and impact of the manuscript. REVIEWER 2 This a single-center retrospective analysis evaluating cutaneous melanoma cases at a tertiary referral centre between 2017-2025, including 597 patients with in situ and invasive melanoma. The study is very well written and addresses important data re: the diagnosis of melanoma in the UAE. Results are largely influenced by the disproportionate predominance of European ethnicity. However, I have some observations regarding this study that should be addressed before the study is considered for publication: 1. Authors report pathological data including Breslow thickness, and Clark Level. However, authors did not report mitotic rate, presence of ulceration, vascular or perineural invasion. This should be considered to be included as considerably limits the validity of this analysis. 2. Authors did not report lymph node status as such this is as important limitation and missed opportunity that would strenghten this manuscript considerably. If metastatic tumors were excluded, I strongly recommend authors to include lymph node status and to report regional and locoregional involvement as per AJCC staging. 3. More information re: pathological assessment should be provided. For instance, is molecular assessment performed in this jurisdiction? BRAF status alongside common mutations in cutaneous melanoma should be described. 4. Socioeconomic status of population diagnosed if available should be included as its limits interpretation. For instance, is postal code available? If so this would also improve readers interprepation of study results. 5. Authors include Clark Level as an independent variable to predict melanoma thickness. Clark levels are correlated therefore it doesn't make much sense to include both, and thus Clark level should be removed from regression model. 6. Authors discussion is highly based in public health strategies to raise awareness of melanoma. This is interesting, however given the remarkably limited granularity of the data reported in its present form if not revised should be tempered as well as significantly trimmed as it goes beyond this original research MS. Likewise, largely the abovementioned concerns are not acknowledged in the limitations, and thus should be revised. REVIEWER 3 The manuscript is a valuable and timely contribution that addresses a critical gap in the epidemiology of cutaneous melanoma in the UAE and the broader MENA region. The large, multi-ethnic cohort, adherence to STROBE guidelines, centralized histopathological review, and comprehensive statistical analyses are notable strengths. I recommend acceptance pending minor revisions to further strengthen the scientific rigor, clarity, and impact of the work. First, the Introduction and Discussion would benefit from substantial condensation to reduce redundancy and improve narrative focus, particularly where global data and public health strategies are reiterated. Second, clearer justification and methodological detail are required for key analytical decisions, including the treatment of Clark level as a continuous variable and the selection of covariates in the multivariable model, to enhance reproducibility and transparency. Third, the limitations section should be expanded to more explicitly address referral bias, representativeness of a single private tertiary center, and potential misclassification related to ethnicity and access to care. Addressing these points will substantially enhance the manuscript’s clarity, methodological robustness, and suitability for publication. [Note: HTML markup is below. Please do not edit.] Reviewers' comments: Reviewer's Responses to Questions -->Comments to the Author 1. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. --> Reviewer #1: Yes Reviewer #2: Partly Reviewer #3: Yes ********** -->2. Has the statistical analysis been performed appropriately and rigorously? --> Reviewer #1: I Don't Know Reviewer #2: N/A Reviewer #3: Yes ********** -->3. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.--> Reviewer #1: No Reviewer #2: No Reviewer #3: Yes ********** -->4. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.--> Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: Yes ********** -->5. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)--> Reviewer #1: This manuscript provides valuable clinicopathological insights into cutaneous melanoma in a multi-ethnic cohort from the United Arab Emirates, a region with limited published data. The relatively large sample size, centralized histopathological confirmation, and analysis of sex- and subtype-specific tumor characteristics are notable strengths. Several issues should be addressed to improve scientific clarity and interpretability. First, the study design does not allow estimation of melanoma prevalence or incidence, as no population denominator is available. References to epidemiological burden or population-level measures should therefore be revised, with findings consistently framed as distributions and patterns among diagnosed cases. Second, the single-center, tertiary referral nature of the dataset introduces potential selection and referral bias, likely overrepresenting fair-skinned expatriates and individuals with greater healthcare access. This limitation should be more explicitly acknowledged, and conclusions regarding national representativeness should be appropriately tempered. Third, the multivariable logistic regression model includes Clark level as an independent predictor of Breslow thickness, although both variables reflect tumor depth and are biologically correlated. The very high odds ratios observed may therefore reflect intrinsic histopathological correlation rather than independent predictive value, and this should be justified or interpreted with caution. Importantly, several established melanoma risk factors were not captured, including skin phenotype or skin color, family history of melanoma, occupational or recreational ultraviolet exposure, and sunscreen use. The absence of these variables limits interpretation of demographic patterns and restricts the ability to contextualize public health recommendations. Finally, while the discussion emphasizes the need for awareness and screening initiatives, the lack of data on sun-protective behaviors and screening practices necessitates framing these conclusions as contextual and hypothesis-generating rather than directly supported by the study findings. Addressing these points will substantially strengthen the rigor, transparency, and impact of the manuscript. Reviewer #2: This a single-center retrospective analysis evaluating cutaneous melanoma cases at a tertiary referral centre between 2017-2025, including 597 patients with in situ and invasive melanoma. The study is very well written and addresses important data re: the diagnosis of melanoma in the UAE. Results are largely influenced by the disproportionate predominance of European ethnicity. However, I have some observations regarding this study that should be addressed before the study is considered for publication: 1. Authors report pathological data including Breslow thickness, and Clark Level. However, authors did not report mitotic rate, presence of ulceration, vascular or perineural invasion. This should be considered to be included as considerably limits the validity of this analysis. 2. Authors did not report lymph node status as such this is as important limitation and missed opportunity that would strenghten this manuscript considerably. If metastatic tumors were excluded, I strongly recommend authors to include lymph node status and to report regional and locoregional involvement as per AJCC staging. 3. More information re: pathological assessment should be provided. For instance, is molecular assessment performed in this jurisdiction? BRAF status alongside common mutations in cutaneous melanoma should be described. 4. Socioeconomic status of population diagnosed if available should be included as its limits interpretation. For instance, is postal code available? If so this would also improve readers interprepation of study results. 5. Authors include Clark Level as an independent variable to predict melanoma thickness. Clark levels are correlated therefore it doesn't make much sense to include both, and thus Clark level should be removed from regression model. 6. Authors discussion is highly based in public health strategies to raise awareness of melanoma. This is interesting, however given the remarkably limited granularity of the data reported in its present form if not revised should be tempered as well as significantly trimmed as it goes beyond this original research MS. Likewise, largely the abovementioned concerns are not acknowledged in the limitations, and thus should be revised. Reviewer #3: The manuscript is a valuable and timely contribution that addresses a critical gap in the epidemiology of cutaneous melanoma in the UAE and the broader MENA region. The large, multi-ethnic cohort, adherence to STROBE guidelines, centralized histopathological review, and comprehensive statistical analyses are notable strengths. I recommend acceptance pending minor revisions to further strengthen the scientific rigor, clarity, and impact of the work. First, the Introduction and Discussion would benefit from substantial condensation to reduce redundancy and improve narrative focus, particularly where global data and public health strategies are reiterated. Second, clearer justification and methodological detail are required for key analytical decisions, including the treatment of Clark level as a continuous variable and the selection of covariates in the multivariable model, to enhance reproducibility and transparency. Third, the limitations section should be expanded to more explicitly address referral bias, representativeness of a single private tertiary center, and potential misclassification related to ethnicity and access to care. Addressing these points will substantially enhance the manuscript’s clarity, methodological robustness, and suitability for publication. ********** -->6. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.--> Reviewer #1: Yes:Omnia Korani Reviewer #2: No Reviewer #3: Yes:Firas Kreidieh ********** [NOTE: If reviewer comments were submitted as an attachment file, they will be attached to this email and accessible via the submission site. Please log into your account, locate the manuscript record, and check for the action link "View Attachments". 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| Revision 1 |
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Clinicopathological Features and Ethnic Disparities of Melanoma in the United Arab Emirates: 2017-2025 PONE-D-25-68202R1 Dear Dr. Mokhtar, We’re pleased to inform you that your manuscript has been judged scientifically suitable for publication and will be formally accepted for publication once it meets all outstanding technical requirements. Within one week, you’ll receive an e-mail detailing the required amendments. When these have been addressed, you’ll receive a formal acceptance letter and your manuscript will be scheduled for publication. An invoice will be generated when your article is formally accepted. Please note, if your institution has a publishing partnership with PLOS and your article meets the relevant criteria, all or part of your publication costs will be covered. Please make sure your user information is up-to-date by logging into Editorial Manager at Editorial Manager® and clicking the ‘Update My Information' link at the top of the page. For questions related to billing, please contact billing support. If your institution or institutions have a press office, please notify them about your upcoming paper to help maximize its impact. If they’ll be preparing press materials, please inform our press team as soon as possible -- no later than 48 hours after receiving the formal acceptance. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. Kind regards, Mohamed Gouda, MD, PhD Academic Editor PLOS One Additional Editor Comments (optional): Reviewers' comments: Reviewer's Responses to Questions -->Comments to the Author 1. If the authors have adequately addressed your comments raised in a previous round of review and you feel that this manuscript is now acceptable for publication, you may indicate that here to bypass the “Comments to the Author” section, enter your conflict of interest statement in the “Confidential to Editor” section, and submit your "Accept" recommendation.--> Reviewer #1: All comments have been addressed ********** -->2. Is the manuscript technically sound, and do the data support the conclusions? The manuscript must describe a technically sound piece of scientific research with data that supports the conclusions. Experiments must have been conducted rigorously, with appropriate controls, replication, and sample sizes. The conclusions must be drawn appropriately based on the data presented. --> Reviewer #1: Yes ********** -->3. Has the statistical analysis been performed appropriately and rigorously? --> Reviewer #1: Yes ********** -->4. Have the authors made all data underlying the findings in their manuscript fully available? The PLOS Data policy requires authors to make all data underlying the findings described in their manuscript fully available without restriction, with rare exception (please refer to the Data Availability Statement in the manuscript PDF file). The data should be provided as part of the manuscript or its supporting information, or deposited to a public repository. For example, in addition to summary statistics, the data points behind means, medians and variance measures should be available. If there are restrictions on publicly sharing data—e.g. participant privacy or use of data from a third party—those must be specified.--> Reviewer #1: Yes ********** -->5. Is the manuscript presented in an intelligible fashion and written in standard English? PLOS ONE does not copyedit accepted manuscripts, so the language in submitted articles must be clear, correct, and unambiguous. Any typographical or grammatical errors should be corrected at revision, so please note any specific errors here.--> Reviewer #1: Yes ********** -->6. Review Comments to the Author Please use the space provided to explain your answers to the questions above. You may also include additional comments for the author, including concerns about dual publication, research ethics, or publication ethics. (Please upload your review as an attachment if it exceeds 20,000 characters)--> Reviewer #1: I would like to thank the authors for their efforts in revising the manuscript and for adequately addressing the reviewers’ comments. The revisions have improved the clarity and overall quality of the work. I have no further major concerns. ********** -->7. PLOS authors have the option to publish the peer review history of their article (what does this mean?). If published, this will include your full peer review and any attached files. If you choose “no”, your identity will remain anonymous but your review may still be made public. Do you want your identity to be public for this peer review? For information about this choice, including consent withdrawal, please see our Privacy Policy.--> Reviewer #1: No ********** |
| Formally Accepted |
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PONE-D-25-68202R1 PLOS One Dear Dr. Mokhtar, I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS One. Congratulations! Your manuscript is now being handed over to our production team. At this stage, our production department will prepare your paper for publication. This includes ensuring the following: * All references, tables, and figures are properly cited * All relevant supporting information is included in the manuscript submission, * There are no issues that prevent the paper from being properly typeset You will receive further instructions from the production team, including instructions on how to review your proof when it is ready. Please keep in mind that we are working through a large volume of accepted articles, so please give us a few days to review your paper and let you know the next and final steps. Lastly, if your institution or institutions have a press office, please let them know about your upcoming paper now to help maximize its impact. If they'll be preparing press materials, please inform our press team within the next 48 hours. Your manuscript will remain under strict press embargo until 2 pm Eastern Time on the date of publication. For more information, please contact onepress@plos.org. You will receive an invoice from PLOS for your publication fee after your manuscript has reached the completed accept phase. If you receive an email requesting payment before acceptance or for any other service, this may be a phishing scheme. Learn how to identify phishing emails and protect your accounts at https://explore.plos.org/phishing. If we can help with anything else, please email us at customercare@plos.org. Thank you for submitting your work to PLOS ONE and supporting open access. Kind regards, PLOS ONE Editorial Office Staff on behalf of Dr. Mohamed Gouda Academic Editor PLOS One |
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