“…Patients with identified mutations were in addition analyzed by fragment analysis and sequenced as described elsewhere. 39 SeqScape Version 2.5.0 software (Applied Biosystems) with GenBank NM_0004364.3 as reference sequence was used to determine sequence variants, with the following being regarded as polymorphisms: c.690G Ͼ T (rs34529039), c.574_578dup, and c.573G Ͼ C. 40,41 WT1 mutations were detected by PCR amplification of genomic DNA and sequencing of exon 7 and exon 9 where the majority of reported WT1 mutations have been found. 24 Primers used for PCR and sequencing were WT1ex7-F (5Ј-ATGGGGATCTGGAGTGTGAAT-3Ј), WT1ex7-R (5Ј-AC-AGCGGGCACACTTACC-3Ј), WT1ex9PCR-F (5Ј-GGACTGGGGAAA-TCTAAG-3Ј), WT1ex9PCR-R (5Ј-TTCTGCTGCTTTTCTGTA-3Ј), WT1ex9Seq-F (5Ј-GGACTGGGGAAATCTAAG-3Ј), and WT1ex9Seq-R (5Ј-AAAGATAGCCACGCACTA-3Ј).…”