5a0db08a_ne__Nfat5__ENSMUSG00000003847___Biotype
[Name] Nfat5-007 [Transcript ID] ENSMUST00000154474 [bp] 6099 [Protein] 81aa [Translation ID] ENSMUSP00000115036 [CCDS] - [UniProt] D6RH40 [RefSeq] - [Flags] Transcript Support Level 5, for transcripts that are not supported at all by either an mRNA or an EST.The Transcript Support Level (TSL) is a method to highlight the well-supported and poorly-supported transcript models for users. The method relies on the primary data that can support full-length transcript structure: mRNA and EST alignments supplied by UCSC and Ensembl.TSL:5 [Biotype] 
Transcript is thought to undergo nonsense mediated decay, a process which detects nonsense mutations and prevents the expression of truncated or erroneous proteins. Nonsense mediated decay
Ensembl genome browser 81: Mus musculus - Summary - Gene: Nfat5 (ENSMUSG00000003847)