Monthly Report — January 2026 Results. Focus: PRA-rcd4 genetic testing, breeder collaboration.
PRA-rcd4 Genetic Testing: January Results Snapshot
As of the end of January 2026, the PRA-rcd4 dataset continues to grow steadily through voluntary contributions from breeders worldwide.
Current dataset (January 2026):
- Total genetic tests collected: 467
- Clear (WT/WT): 67.9%
- Carriers (WT/MUT): 27.6%
- Affected (MUT/MUT): 21 dogs (4.5%)
This dataset now represents one of the largest openly documented PRA-rcd4 collections within the Japanese Spitz breed.
While not yet sufficient for full population-level conclusions, it clearly moves the discussion beyond isolated cases and anecdotal reports, allowing early pattern recognition and informed risk management.
Breeder Collaboration: “Japanese Spitz History” Community
The private breeder community Japanese Spitz History continues to function as a working discussion and verification space.
January status:
- Total members: 247
- Active members: approx. 245
- Topics:
- [2026-01-31] 1935.07.16 Rally Maxwell Sidny
- [2026-01-28] 1994.01.21 Silverbow Storm Boy
- [2026-01-23] 2000.07.02 Jasam`s Interesting Silver Boy
- [2026-01-21] 1996.10.16 Rowleys Just Justin
- [2026-01-14] 1951.01.05 Darly of Moonlight (male)
- [2026-01-10] What do we actually know about the tail?
- [2026-01-07] Labeled Dog Body Parts
- [2026-01-03] A small white dog appears in a family photograph from postwar Japan
Progress in breeding does not come from dramatic breakthroughs, but from sustained, methodical accumulation of evidence — and shared commitment.
The work continues.
