SRC-like adaptor protein (SLA, also known as SLAP) binds to tyrosine phosphorylated FLT3 (Kazi and Ronnstrand, 2012). This binding stimulates CBL-dependent FLT3 ubiquitination and internalization. Because SLAP is also known to bind to CBL, SLAP may function as an adaptor protein, bringing CBL to the FLT3 receptor. Direct interaction of CBL and SLAP has not be explicitly demonstrated in the context of FLT3 signaling, however (Dragone et al, 2006; Kazi et al, 2012, reviewed in Kazi and Ronnstrand, 2019). In addition to promoting the internalization of FLT3, SLAP also contributes to downstream signaling through the AKT, MAP kinase and p38 cascades. These roles are not shown in this pathway, however (Kazi et al, 2012).