Hi @Fatimasf and @ecosta_sage, Hope you are doing well. I came across an [AMP-AD dataset from the frontal cortex](https://www.synapse.org/Synapse:syn55249985) and noticed that 106 individuals have two substantially different samples in this dataset (e.g., in terms of protein coverage and abundance levels), while the [metadata](https://www.synapse.org/Synapse:syn51757646) only contains one record per individual. I was wondering if you happen to know whether there is additional information available somewhere for these samples, such as collection date or age at collection. Alternatively, would it be appropriate to select one sample for each of these individuals? I noticed that the duplicated samples seem to come from different cohorts, with one from EMDP and the other from Mayo/MSSM. Thank you very much for your help! Cc’ing my PI, @ahuels, for visibility. Best, Shifan

Created by Shifan Yan S-Yan
Hi @S-Yan, Thanks for reaching out about the issue with duplicate sample IDs in the proteomics data and single records in the metadata. I believe a similar question has been asked in this thread: https://www.synapse.org/Synapse:syn2580853/discussion/threadId=11505. Nick Seyfried (@nseyfried) at Emory University is the the main contact for the proteomics dataset and I am also tagging Fatemar Seifar (@Fatimasf) again to bring attention to this question. They'll have the detailed insights needed to address the discrepancies you’re seeing. Please connect with them directly for the quickest resolution. We look forward to supporting any data, metadata, or documentation updates in the portal if needed. If you need help connecting with Nick or further assistance, just let us know! Best, Julia @Julia.Gray

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