Testis-specific transcript, Y-linked 2 (non-protein coding) (TTTY2)

Testis-specific transcript, Y-linked 2 (TTTY2) is a non-protein-coding gene encoding a long intergenic non-coding RNA (lincRNA) located on the human Y chromosome[3][7][9]. TTTY2 is part of a multi-copy gene family, with variants such as TTY2L2A and TTY2L12A occupying the Yq11 and Yp11 loci, respectively[1][10][11]. It is specifically expressed in the testis and, while its precise molecular function is not fully defined, deletions of TTTY2 or its family members have been associated with increased risk of male infertility, particularly non-obstructive azoospermia and oligozoospermia[1][10][11]. As a lincRNA, TTTY2 is presumed to be involved in regulation of gene expression, potentially influencing chromatin state or transcription, as is typical for this RNA class, but such mechanisms have not been directly demonstrated for TTTY2 itself[2][5][8]. TTTY2 is not a classic therapeutic target (receptor, enzyme, transporter, etc.), and currently, there are no drugs or biologics known to directly interact with it. However, detection of deletions in this gene may serve as a biomarker for diagnosing or assessing risk of certain forms of male infertility[1][10]. No notable safety concerns or therapeutic challenges have been reported due to the lack of direct targeting or pharmaceutical intervention for TTTY2.

Other names

TTY2lINC00109long intergenic non-protein coding RNA 109NCRNA00109testis expressed transcript, Y-linked 2testis-specific testis transcript Y 2testis-specific transcript, Y-linked 2 (non-protein coding)