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
2231Mycn736.8e-380.0034968JASPAR
389Mycn491.4e-180.00007475JASPAR
2029Mycn270.0000000690.000088991JASPAR
2132Mycn470.00000760.0070167JASPAR
819Mycn190.0150.011031JASPAR