Thanks @Redmar-van-den-Berg for providing this description. I slightly change it.

For a description ENST00000361899.2:c.40A>C,
Mutalyzer gives HGVSP description as ENST00000361899.2(ENSP00000354632):p.(Ile14_Thr226delinsLeuLeuGlyLeuProAlaAlaValLeuIleIleLeuPheProProLeuLeuIleProThrSerLysTyrLeuIleAsnAsnArgLeuIleThrThrGlnGln).
Its link is also available at https://mutalyzer.nl/normalizer/ENST00000361899.2:c.40A%3EC

It is a simple one base replacement somehow the HGVSP prediction is long. This might be due to multiple stop codons in the sequence and this mutation occurs right at the first stop codon. How should we deal with multiple stop codons? Why there are multiple stop codons in one transcript? Which stop codon we should use? Is it in some annotation files? @pemtaschner @jfjlaros