RecruitingPhase 1Drug trialPreoperative Lenvatinib Plus Pembrolizumab in Early-Stage Triple-Negative Breast Cancer (TNBC)This is single arm study of a window of opportunity in which participants with previously untreated triple negative breast cancers (TNBC) who are candidates for potentially curative surgery will receive lenvatinib 12 mg daily for 7 and pembrolizumab 200 mg IV on day 1 prior to surgery