CCNH and hydrops fetalis: Correlation analysis of genes and immune cells (Figure 13B) revealed positive correlations between resting mast cells and several related genes, so we hypothesize that resting mast cells may play an important role in HF due to ICM-HF and CCNH genes correlate with several immune cells, such as negative correlations with memory T cells and resting NK cells and positive correlations with plasma cells and M2 type macrophages.