Peer Review History
| Original SubmissionFebruary 15, 2023 |
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PONE-D-23-04244Efficacy and safety of Mojeaga remedy in combination with conventional oral iron therapy for correcting anemia in obstetric population: a phase II randomized pilot clinical trialPLOS ONE Dear Dr. ELEJE, 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 respond to all reviewers comments one by one clearlyFor Lab, Study and Registered Report Protocols: These article types are not expected to include results but may include pilot data. ============================== Please submit your revised manuscript by Apr 29 2023 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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PLOS only allows data to be available upon request if there are legal or ethical restrictions on sharing data publicly. For more information on unacceptable data access restrictions, please see http://journals.plos.org/plosone/s/data-availability#loc-unacceptable-data-access-restrictions. In your revised cover letter, please address the following prompts: a) If there are ethical or legal restrictions on sharing a de-identified data set, please explain them in detail (e.g., data contain potentially sensitive information, data are owned by a third-party organization, etc.) and who has imposed them (e.g., an ethics committee). Please also provide contact information for a data access committee, ethics committee, or other institutional body to which data requests may be sent. b) If there are no restrictions, please upload the minimal anonymized data set necessary to replicate your study findings as either Supporting Information files or to a stable, public repository and provide us with the relevant URLs, DOIs, or accession numbers. For a list of acceptable repositories, please see http://journals.plos.org/plosone/s/data-availability#loc-recommended-repositories. We will update your Data Availability statement on your behalf to reflect the information you provide [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: Yes Reviewer #3: Partly Reviewer #4: Partly Reviewer #5: Yes ********** 2. Has the statistical analysis been performed appropriately and rigorously? Reviewer #1: Yes Reviewer #2: Yes Reviewer #3: Yes Reviewer #4: I Don't Know Reviewer #5: 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: Yes Reviewer #2: Yes Reviewer #3: No Reviewer #4: No Reviewer #5: No ********** 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 Reviewer #4: No Reviewer #5: 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: A very interesting topic and i must say the author has very well written the manuscript , methodology is very well explained and results have been discussed with other studies but there are some Grammatical mistakes which have been marked. Kindly see the marked corrections Reviewer #2: The authors sufficiently responded to the comments from the previous reviewers. No further comments on the methodology and results of the study. However, the manuscript contains some minor grammatical and syntax errors. Reviewer #3: 1) The previous reviewer noted that the protocol specified an interim analysis and pointed out that the alpha level was likely inflated. The reviewer suggested that this was due to the study not being designed as a group sequential design. This might have produced somewhat of a red herring, as the study would not have to be a group sequential design to employ interim analysis methodology. Studies may be designed with early stopping rules based on interim analysis of the data. However, this requires the use of more advanced analysis methods to control Type I error. These methods can be based around alpha spending rules, Bayesian methods, or a combination. The authors responded that they had indeed performed interim analysis but focused on the remark about group sequential design. They did not provide adequate statistical justification for disregarding the issue of inflated Type I error. Actually, there is no justification available. Specifically, the authors wrote: "However, since we had only one interim analysis, the overall type I error resultant from this formal interim analysis of primary endpoint was not inflated as we eventually used p<0.05 as marker for test of significance in the study." This is incorrect. Indeed, the authors do not appear to have planned the interim analysis with respect to maintaining Type I error overall or for the final analysis. This is unfortunate but is not capable of remediation at this point. My recommendation at this point is to acknowledge the error in planning the statistical analysis in the methods section, report fully both the interim analysis and the final analysis (without attempting to make any adjustments), and note in the discussion that this is a limitation on the strength of the evidence. The error can be acknowledged in a "soft" way in the methods section if the discussion of the limitation is made a bit more "sharp", but it must be brought up in the statistical analysis section regardless. 2) The authors performed subgroup analysis as well, evidently. A similar disclaimer should be made in the statistical methods section noting that no correction for multiple testing was performed. 3) The previous reviewer's remark about convenience sampling might have been slightly misinterpreted. Perhaps due to how the original manuscript was written, it implied some sort of convenience sampling. However, while one can stretch the definition of "convenience sample" to cover the clinical trial setting, this is usually not how it is interpreted. The usual situation in clinical trials is that all patients who meet certain criteria over some period of time are approached for potential enrollment. Was this not the case in this trial? If it was the case, then the sampling would not usually be termed "convenience sampling". 4) Figures 2 and 3 should be reorganized. It makes little sense to connect the categories as they are connected, let alone to draw a smoothed curve between them. Instead, simply show each category as separate line graph from pre to post, with both treatments shown in each separate plot. It would probably be best to display the data as boxplots if the raw data overlap too much. If the overlap is not severe, then raw data could be plotted instead or in addition. 5) The following minor issues should be corrected. Figure 1 legend contains a misspelling. The English language usage in several areas could benefit from a careful proofreading. Reviewer #4: This papers presents the results of a clinical trial with Mojeaga, a plant-based mix with to enhance responses to oral iron in women with anaemia during and after pregnancy. It is noted the trial investigational product was provided by the manufacturer, without other financial support. There are a number of issues with the study design and conduct that need explanation. The study design was open label, creating a high potential for bias. From the description of the Mojeaga, there doesn’t appear to be any reason why a placebo could not have been used. An explanation for this study design is required. The primary outcomes were reported as the change in haematocrit and median haematocrit at 2 weeks. However, in the associated material provided the original study design was for the primary outcome to be correction of anaemia. This would appear to be the original study design, with a different primary endpoint and sample size calculation based on this. Could the authors clarify whether the study reported prospectively or post-hoc determined outcomes? The rationale for studying Mojeaga should be clarified. The references cite a single paper (with two case reports), newspapers and the manufacturer. The claimed mechanism of action from the manufacturer should be critiqued. It would be unlikely that additional B vitamins over and above the standard of care iron / multivitamin preparation would add much benefit. Statements made in for the study rationale should be reviewed to remove bias. For example, the following is misleading: “In other published reports, a significantly higher number of women achieved anemia correction within a shorter time frame, and there were markedly fewer gastrointestinal treatment-related adverse events,” As there are prior comparative studies. Furthermore, the cited (newspaper article) references also suggest efficacy in sickle cell disease. There appear to be no unifying mechanism of action. This does not preclude doing the study based on the very limited observational data presented, but it would be preferable if the mechanism is unknown for this just to be stated rather than reproduce manufacturer’s claims. The rationale should also consider the risks of given a product with unidentified mode of action (growth factor-like activity is proposed in the discussion) to pregnant women. In particular, is there widespread experience of use in pregnancy? The randomisation should be reported as either simple or block. The formulation of Astyfer should be provided. The method should be corrected to clarify whether phone contact was daily or weekly. The use of line graphs is not recommended for these data, as they imply connections of data rather than discreet variables. It may be appropriate have line graphs joining single symptoms before and after treatment (eg dizziness in figure 2) although this could look busy. Otherwise columns may better represent the data. While it is mandatory to report safety outcomes, the interpretation should be more considered. It is a very small study with only 44 women given the investigational product in pregnancy. An absence of adverse events in such a small cohort does not establish safety, particularly in the absence of supporting pre-clinical data. As noted by a previous reviewer, the pregnancy outcome data should only include women where the treatment was given in pregnancy (table 5). Table 5 is currently misleading as it includes pregnancy outcomes from prior to enrolment. The discussion is quite repetitive and should be shortened. It should include a discussion of the clinical benefit and risks of adding a product during pregnancy that has unknown mechanism of action and which was associated with a greater haematocrit improvement at two weeks but little difference in clinical symptoms. The final paragraph in the discussion states that haemoglobin and related parameters are only surrogates for anaemia. It then attempts to redefine anaemia as a reduction in erythrocyte mass per unit body weight, mis-citing prior work. These prior studies point to a higher red cell mass in pregnancy, with a greater increase in plasma volume. While they suggest that the red cell mass may be more relevant it is also not readily measurable and they do not attempt to define anaemia by red cell mass. While I have concerns about the study being conducted in pregnancy without a prior safety profile, the study has been performed with EC approval and it is good to see randomised data for "alternative" therapies. However, the authors need to provide an assurance that the study has been conducted and analysed as prospectively planned and the reporting of the study should acknowledge the limitations of prior safety and mechanistic data and the limitations of the study design and outcomes. Reviewer #5: PONE-D-23-04244 Efficacy and safety of Mojeaga remedy in combination with conventional oral iron therapy for correcting anemia in obstetric population: a phase II randomized pilot clinical trial Dr. GEORGE UCHENNA ELEJE PLOS ONE Some comments *P9: There was no comparable groups in this study receiving different doses of the intervention therapy to detect as mentioned potentially increase side effects due to excess unabsorbed iron remaining in the GIT This is out of the scope of the study to be mentioned * The randomization was done by the study site (didn’t mention the number (%) taken from each strata in case strata differed in overall health or in exposure to risk factors of anemia *Control therapy P13-14: The frequency of daily intake is to be revised; two or three times daily (unclear) * Secondary outcome P15: spelling mistake ; epigatric pain- epigastric pain * Sampling approach P16: No sampling should be done for anemic patients before randomization Could be written as such: All individuals during the period from …. to …. after satisfying the inclusion and the exclusion criteria were randomly allocated. *Results: Mean age of the study groups was not mentioned *P33: Through Thorough ??? *P 35 discussion: efficacy and effectiveness *Monitoring of the liver and the renal functions. Does a period of two weeks is sufficient for them to change ?References are needed for confirmation ********** 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: Aisha Wali Reviewer #2: No Reviewer #3: No Reviewer #4: Yes: Philip Crispin Reviewer #5: No ********** [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". If this link does not appear, there are no attachment files.] While revising your submission, please upload your figure files to the Preflight Analysis and Conversion Engine (PACE) digital diagnostic tool, https://pacev2.apexcovantage.com/. PACE helps ensure that figures meet PLOS requirements. To use PACE, you must first register as a user. Registration is free. Then, login and navigate to the UPLOAD tab, where you will find detailed instructions on how to use the tool. If you encounter any issues or have any questions when using PACE, please email PLOS at figures@plos.org. Please note that Supporting Information files do not need this step.
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| Revision 1 |
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Efficacy and safety of Mojeaga remedy in combination with conventional oral iron therapy for correcting anemia in obstetric population: a phase II randomized pilot clinical trial PONE-D-23-04244R1 Dear Dr. ELEJE, 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 for payment will follow shortly after the formal acceptance. To ensure an efficient process, please log into Editorial Manager at http://www.editorialmanager.com/pone/, click the 'Update My Information' link at the top of the page, and double check that your user information is up-to-date. If you have any billing related questions, please contact our Author Billing department directly at authorbilling@plos.org. 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, Ahmed Mohamed Maged, MD 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 Reviewer #3: All comments have been addressed Reviewer #5: 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 Reviewer #3: (No Response) Reviewer #5: Yes ********** 3. Has the statistical analysis been performed appropriately and rigorously? Reviewer #1: Yes Reviewer #3: (No Response) Reviewer #5: 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 Reviewer #3: (No Response) Reviewer #5: 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 Reviewer #3: (No Response) Reviewer #5: 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: (No Response) Reviewer #3: Some minor notes: * The authors' response to the issue about the lack of placebo is reasonable. Although this study is open-label, it should provide useful information for potential effect sizes in future completely blinded trials. * The trial registration data confirms the authors' response about the primary endpoint of mean hemoglobin change. Reviewer #5: the required corrections and explanations had been fulfilled by the authors and the article is accepted for publication ********** 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: Yes: Aisha Wali Reviewer #3: No Reviewer #5: No ********** |
| Formally Accepted |
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PONE-D-23-04244R1 Efficacy and safety of Mojeaga remedy in combination with conventional oral iron therapy for correcting anemia in obstetric population: a phase II randomized pilot clinical trial Dear Dr. Eleje: I'm pleased to inform you that your manuscript has been deemed suitable for publication in PLOS ONE. Congratulations! Your manuscript is now with our production department. 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. If we can help with anything else, please email us at plosone@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 Professor Ahmed Mohamed Maged Academic Editor PLOS ONE |
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