established (Nurnberger et al., 2004). Consistent with a previous examination of parental AUD and offspring trauma among White and Black youth and young adults in COGA (Bender et al., 2020), our study found that family configurations in which the mother or both parents experienced AUD were associated with the highest risks of offspring sexual trauma and high PTS symptom severity (Classes 3 and 4), and confirms that these family alcohol risks may also contribute to offspring alcohol symptom severity, as in Class 4.