KCNA1 and breast cancer: To determine whether epileptic Kcna1‐null mice (Kcna1–/–; Tac:N:NIHS‐BC genetic background) exhibit abnormal repetitive behaviors, age‐matched juvenile Kcna1–/– mice (n = 12) and WT littermates (n = 13) were evaluated in tests commonly used for assessing autistic‐like repetitive behaviors: marble burying, nestlet shredding, and self‐grooming abilities (Angoa‐Pérez et al., 2013; Kim et al., 2016).