Table 1.

Search strategy in PubMed.

Number	Search Strategy
#1	CTNNB1 [Text Word]
#2	CTNNB1 Protein, Xenopus [MeSH Terms]
#3	#1 OR #2
#2	de novo OR loss-of-function OR germline mutation OR novel mutation [Text Word]
#3	de novo OR novel mutation [Text Word]
#4	loss of function mutation [MeSH Terms]
#5	germ-line mutation [MeSH Terms]
#6	#3 OR #4 OR #5
#7	#2 OR #6
#8	#3 OR #7