Methylated CpG dinucleotides in the 5-alpha reductase 2 gene may explain finasteride resistance in benign prostatic enlargement patients
Zhemin Lin, Dongdong Fan, Song Jin, Zhanliang Liu, Yi-Nong Niu
Asian Journal of Andrology2021
Summary (paraphrased)
Finds methylated CpG dinucleotides in the SRD5A2 gene and proposes that methylation status of the 5-alpha-reductase-2 gene explains variable finasteride response in benign prostatic enlargement patients. DNA methylation at the very locus encoding finasteride's drug target modulates pharmacodynamics.
Why it’s in the corpus
Ties DNA methylation at SRD5A2 to 5-ARI action in humans — complements the Melcangi 2019 finding of altered SRD5A2 methylation in PFS cerebrospinal fluid (DISC-025) and the SRD5A1 epigenetic-regulation precedent (LIT-058). Methylation at the drug-target locus is a candidate persistence mechanism.
Related records
- Peer-reviewed paperPSSD Discord pickSIDEfxHUB pick
Altered methylation pattern of the SRD5A2 gene in the cerebrospinal fluid of post-finasteride patients: a pilot study
Roberto Cosimo Melcangi, Livio Casarini, Marco Marino, Daniele Santi, Samantha Sperduti, Silvia Giatti, Silvia Diviccaro, Maria Grimoldi… · Endocrine Connections
In this pilot case-control study, 16 PFS patients were compared with 36 controls who had never used finasteride: 18 surgical patients giving cerebrospinal fluid (2 of whom also gave blood) and 18 blood-only donors; controls' mean age was 40.8 years vs 34.5 in…
SRD5A1SRD5A2DISC-0252019PFSPSSDPSSD Discord picks - Peer-reviewed paper
Steroid 5α-reductase isozymes in the adult female rat brain: central role of dihydrotestosterone
J. M. Torres; E. Ortega · Journal of Molecular Endocrinology
5-alpha-reductase exists as two isoforms, type 1 associated with catabolic functions and type 2 with sexually dimorphic functions, and the authors had previously shown both are present and oppositely regulated by androgens in the adult male rat brain. This…
ARSRD5A1SRD5A2LIT-0572006PFSLiterature sweep · Oct 2026 - Peer-reviewed paper
5α-Reductase Isoenzymes: From Neurosteroid Biosynthesis to Neuropsychiatric Outcomes
Rodríguez-Cerdeira, Carmen; Freus, Marika; Misiakiewicz-Has, Kamila; Pilutin, Anna; Kolasa, Agnieszka; Maksym, Radoslaw; Kajdy, Anna · NeuroSci (systematic review; PRISMA 2020)
PRISMA systematic review (PubMed/Scopus/Web of Science to Feb 2025; 83 included articles) on SRD5A1/2/3 tissue distribution: SRD5A1 drives CNS allopregnanolone synthesis; impaired neurosteroidogenesis from 5α-reductase inhibition is linked to anxiety…
SRD5A1SRD5A2SRD5A3PFS-0112025Core corpus
