Andersen-Tawil syndrome (KCNJ2 loss-of-function) OMIM 170390

In Andersen-Tawil syndrome (KCNJ2, OMIM 170390), the master switch sits on the ↓ DOWN branch ([F] forced below); the healthy state is the ON well. The forced corrective direction is to raise s toward ON branch (polarity: clear). Classification: ✓ Recovers an existing standard. Direction only — no dose, no efficacy magnitude.

The disease maps to an R19 double-well whose corrective lever is read straight off the cusp (barrier 0.5289, γ 1.4545, spinodal 0.6752). The corrective direction is forced [F]; the agent names below are direction-concordant labels at grade [O] (no dose, no efficacy or safety magnitude). This is a research hypothesis offered to experts, not medical advice.

The emergence switch

The switch for Andersen-Tawil syndrome is an R19 double-well emerged from the real proximal-promoter DNA of KCNJ2. Its geometry is fixed by measured stiffness γ (never fitted); the numbers below are read directly off that cusp.

emergent axis: ↓ DOWN [F]
healthy branch: ON
lesion: LOF_null
γ (stiffness): 1.4545
barrier: 0.5289
spinodal: 0.6752
s_on / s_off: 1.2060 / -1.2060
fragility: 0.32
corrective polarity: clear
forced direction: raise s toward ON branch

Chemistry feasibility (DIRECTION only [O]). small-molecule recrossing of the fold is geometrically harder (barrier 0.5289 at neutral drive; lower barrier = smaller drive to supply). [O] -- no affinity/potency/dose/efficacy asserted.

The derived corrective lever

The cusp forces a corrective direction: raise s toward ON branch. This is the load-bearing output of the framework — it is [F] forced, and it is falsifiable. 2 lever families are derived; the lead is h-restore (drive modulator).

h-restore (drive modulator)sign: decreasegeometric rank 0.32

Mechanism. remove / oppose the drive (clear the accumulating load that pins the disease branch)

Applies to. allele-agnostic (downstream/environmental tilt)

favoured when the switch is fragile -- a small drive shift recrosses the fold

Falsifier. If clearing/opposing the accumulating SCN5A does NOT relieve the disease branch in a KCNJ2 model, the h-restore(clear) lever is refuted for this axis.

gamma-restore (stabiliser / chaperone)sign: Nonegeometric rank 0.00

Mechanism. N/A

Applies to. none (honest exclusion)

EXCLUDED: null allele -- no product to stiffen

Falsifier. If a folding-stabiliser/chaperone does NOT re-deepen the healthy well for a residual KCNJ2 allele (no rescue that a null allele lacks), the gamma-restore lever is refuted; null alleles are excluded by construction.

Agents mapped onto the lever

✓ Agreement with established practice. The corrective direction derived here (raise s toward ON branch) independently matches an agent already in clinical use for this disease: class-IC antiarrhythmic (flecainide); carbonic anhydrase inhibitor (acetazolamide / dichlorphenamide). The geometry recovered known medicine — this is a validation signal for the logic, not a new treatment claim by this kit.

Existing agents whose known action is direction-concordant with the derived lever (status as pinned in the corpus; no dose, no efficacy magnitude).
agent (class)	dir.	status	phase	map
class-IC antiarrhythmic (flecainide) Miyamoto 2015; Pellizzon 2008 (flecainide, ATS ectopy)	decrease	approved	4	✓ in use
carbonic anhydrase inhibitor (acetazolamide / dichlorphenamide) Sansone 2008; dichlorphenamide periodic-paralysis program	decrease	approved	4	✓ in use

⚠ Mechanism-direction only — do not self-administer; no dose (unvalidated; set by a physician / national authority); not an approved use.

Evidence & provenance

What is reproduced vs. cited for this page.
element	grade	basis
R19 switch & cusp geometry (this page)	[V] verified	emerged from measured promoter γ of `KCNJ2`; deterministic, 2×sha256 identical
corrective direction	[F] forced	forced by the cusp sign; falsifiable (see lever falsifiers)
mapped agents / leads	[O] open	direction-concordance only; corpus-pinned (2026-06-21); no dose, no efficacy/safety magnitude

Reading the agent column. VALIDATION SIGNAL -- the agent is already approved / established standard for this disease, so the direction logic recovered known clinical practice. Not a new claim by this kit. GENUINE HYPOTHESIS -- no approved indication for this disease; the direction match is a direction-only, untested [O] lead. Basis field grades the evidence (investigational here / in a related condition / off-label / speculative).