Clusters found with your TF of interest:

Not all of these will be good Discoveries; and not all will be good matches to your motif of interest. Be sure to check out the e-values in each case (shown in the table below). It can also be the case that other motifs are better matches. This is just giving you a table of possibilities.
clusterTFSiteseDiscoveryeMatchdatabase
600CREB16800.06736JASPAR
296CREB17400.067423JASPAR
2449CREB16400.068119JASPAR
847CREB1594.80001e-410.11889JASPAR
1628CREB1484.4e-210.020826JASPAR
1566CREB1708.1e-190.012298JASPAR
1435CREB1471.5e-170.026392JASPAR
1587CREB1410.00000830.017841JASPAR
1484CREB1190.000160.0035473JASPAR
1762CREB1250.000410.00015314JASPAR
1197CREB1240.00450.0083665JASPAR
221CREB1320.0230.027964JASPAR
1338CREB1190.120.018978JASPAR