There is no Gene SYMBOL in annotation of GPL5447, the Gene ACCESSION is GB_LIST in the file. And I can find some via http://idconverter.bioinfo.cnio.es/IDconverter.php . e.g. AA598492 and AA825404 are UBE2B and IL2RG

But I can not find it in the org.Hs.eg.db or Homo.sapiens in R, code as below.

library(Homo.sapiens)
keys <- c("AA484435", "AA598492", "AA825404")
columns <- c("SYMBOL")
select(Homo.sapiens, keys, columns, keytype = "ACCNUM")

    ACCNUM SYMBOL
1 AA484435   A1BG
2 AA598492   <NA>
3 AA825404   <NA>

Any solution?