We were not able to parse, find, or, register allele using XP_011521901.1:p.[Cys257_Ala262delinsLeuTrpLeuLeuValGly HGVS expression or CA Identifier.

The following information might be helpful to understand the reason.

Type of the error: HgvsParsingError

Explanation: The character ']' was expected but the end of expression was reached