553 F. App'x 994
Fed. Cir.2014Background
- Two infants (Jordan Harris and N.S.) developed early-life febrile seizures shortly after receiving DTaP shots; both later tested positive for de novo SCN1A gene mutations and were diagnosed within the SCN1A-related epilepsy spectrum (Dravet syndrome/SMEI).
- Petitioners filed Vaccine Act claims alleging the DTaP vaccine substantially caused their seizure disorders (off‑Table claims). Cases were consolidated and assigned to one Special Master.
- The Special Master denied compensation, finding the SCN1A mutations were the sole cause of the seizures and crediting the Secretary’s experts (Drs. Wiznitzer and Raymond) over Petitioners’ expert (Dr. Kinsbourne).
- The Court of Federal Claims reversed, concluding the Special Master applied the wrong standard (requiring too much scientific certainty) and improperly credited the Secretary’s experts, viewing the record as conflicting and in equipoise in petitioners’ favor.
- The Federal Circuit reversed the Court of Federal Claims, reinstated the Special Master’s factual findings (that the gene mutations were more likely than not the sole cause), and vacated the subsequent compensation awards.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether petitioners proved vaccine caused injuries (Althen elements) | Petitioners: DTaP was a substantial/causa- tion-in-fact trigger for their SMEI/epilepsy | Secretary: SCN1A mutations (de novo, pathogenic) were the sole cause; vaccine not causative | Court: Special Master reasonably found petitioners did not meet burden; gene mutation more likely sole cause; reversal of CFC |
| Permissible scope of Special Master’s review of alternative causes | Petitioners: Special Master improperly considered alternative‑cause evidence against petitioners’ prima facie case | Secretary: Special Master may consider whole record (including alternative causes) when assessing prima facie and factors‑unrelated defense | Court: Follows Stone — special master may consider other-cause evidence when evaluating prima facie and factors-unrelated defense |
| Burden of proof on “factors unrelated” defense once Althen met | Petitioners: Secretary failed to meet burden and Special Master effectively shifted burden to petitioners | Secretary: Met burden by identifying and proving SCN1A mutations were sole substantial factor | Court: Secretary met burden by preponderance; Special Master did not improperly shift burden |
| Deference to Special Master's credibility and fact findings | Petitioners/CFC: Expert conflicts created equipoise requiring decision for petitioners | Secretary: Special Master entitled to weigh experts and choose more persuasive testimony | Court: Upholds Special Master’s factual findings unless arbitrary/capricious; here findings supported by record and not arbitrary |
Key Cases Cited
- Carson v. Sec’y of Health & Human Servs., 727 F.3d 1365 (Fed. Cir.) (standard of review for appeals from Court of Federal Claims in Vaccine Act cases)
- Stone v. Sec’y of Health & Human Servs., 676 F.3d 1373 (Fed. Cir.) (special master may consider other-cause evidence when assessing prima facie and factors‑unrelated defense)
- Moberly v. Sec’y of Health & Human Servs., 592 F.3d 1315 (Fed. Cir.) (Althen three‑part test for causation in Vaccine Act off‑Table cases)
- Althen v. Sec’y of Health & Human Servs., 418 F.3d 1274 (Fed. Cir.) (establishes medical theory, logical sequence, and temporal relationship elements)
- de Bazan v. Sec’y of Health & Human Servs., 539 F.3d 1347 (Fed. Cir.) (Secretary’s burden to identify and prove factors unrelated as sole substantial cause)
- Knudsen v. Sec’y of Health & Human Servs., 35 F.3d 543 (Fed. Cir.) (expert conflict/evidence in equipoise discussed)
- Hodges v. Sec’y of Health & Human Servs., 9 F.3d 958 (Fed. Cir.) (deference to Special Masters’ fact‑intensive conclusions)
- Kumho Tire Co. v. Carmichael, 526 U.S. 137 (U.S.) (Daubert gatekeeping: expert methodology reliability)