Artificial intelligence can improve detection of binucleated erythroblasts (BNEs), a rare and difficult-to-quantify phenomenon that can indicate myelodysplastic syndrome (MDS), according to a new report.
The investigators behind the study say the new method streamlines the use of new technology to make it more feasible to leverage machine learning. The study was published in Scientific Reports.1
The authors explained that MDS is notably heterogeneous, but it can typically be diagnosed based on morphologic bone marrow (BM) dysplasia and persistent cytopenia.
Myelodysplastic syndromes, or MDS, are a group of bone marrow disorders. | Image Credit: Sviatlana - stock.adobe.com
However, accurate diagnosis of cases in which mild cytopenias and subtle dysplastic changes are present can be difficult, and inter-scorer variability and subjectivity may be present, even among experienced hematopathologists, they wrote.
Some patients are left with indefinite diagnoses, such as idiopathic cytopenia of undetermined significance (ICUS) or clonal cytopenia of undetermined significance (CCUS), they said.
Given the current lack of precision, the investigators said it is important to identify objective, standardized methods of distinguishing MDS from nonclonal reactive causes of cytopenia and dysplasia.
Moreover, rare events that are indicative of MDS such as binucleated erythroblasts, while easy to identify using visual microscopy, can be challenging to quantify in large numbers, thus limiting statistical robustness, they said.
One possible solution is imaging flow cytometry (IFC), since it combines high-throughput data acquisition capacity and statistical robustness of conventional multicolor flow cytometry (MFC) together with high-resolution imaging capabilities of microscopy in a single system.
A previous study by the same group found IFC is effective at analyzing morphometric changes in dyserythropoietic BM cells.2 In that study, the investigators used IFC to analyze samples from 14 patients with MDS, 6 patients with ICUS/CCUS, 6 non-MDS controls, and 11 healthy controls.
The investigators found the IFC model, reliably identified and enumerated true binucleated erythroblasts at a significantly higher frequency in two out of three erythroblast maturation stages in MDS patients compared to normal BM (both P = .0001).
Still, they said the workflow of the feature-based IFC analysis is challenging and time-consuming, and requires software-specific expertise. Thats why, in the new paper, they proposed using a convolutional neural network (CNN) algorithm to analyze the IFC image data. They said the CNN algorithm has better accuracy and also more data-interpretation flexibility than feature-base analysis alone. In addition, they used artificial intelligence software specifically designed with a graphical user interface designed to render results that are meaningful to researchers who do not have advanced coding skills.
To test out the new method, the investigators used the raw data from the earlier study and analyzed it using the new artificial intelligence model in order to compare the models results to the previous IFC analysis. Each of the samples was also manually examined to validate the presence of BNEs.
The new model had an accuracy of 94.3% and a specificity of 98.2%. The latter means the model rarely misclassified non-BNEs and BNEs. The models sensitivity was lower, as 21.1% of BNEs in the data set were incorrectly classified as erythroblasts exhibiting irregular nuclear morphology. Overall, though, the investigators said the data suggest a high degree of confidence that when the model identifies a BNE it is correct.
The investigators said it was notable that the model worked as well as it did despite the small data set used to train it. They said incorporating a more robust data set would likely improve the models performance.
Emphasis should be placed on augmenting the classes of cells with irregular nuclear morphology and BNEs that posed classification difficulties, they wrote. Moreover, expanding the range of classification categories to include a category for uncertain cases, in addition to BNEs, doublets, and cells with irregular nuclear morphology, could be beneficial.
For now, though, the investigators said their study shows that AI has the potential to be an effective and efficient diagnostic tool for patients with MDS.
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Machine Learning and Neural Network Can Be Effective Diagnostic Tools in MDS, Study Finds - AJMC.com Managed Markets Network
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