Case#: Variant not associated with a proband. Variant listed in supplementary materials in Supplementary Table 4

DiseaseAssertion: Mucopolysaccharidosis type I, MPS I

FamilyInfo: N/A

CasePresentingHPOs:

CaseHPOFreeText:

CaseNotHPOs:

CaseNotHPOFreeText:

CaseEnzymeAssay: N/A

CaseUrineGAGs: N/A

CaseERT: N/A

CaseBMT: N/A

Variant1: A300T

Variant1ClinVarID: 11923

Variant1CAID: CA121772

Variant2: N/A

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished: N/A

Case#: Functional assay variant with a clinical significance of having conflicting interpretations.

DiseaseAssertion: MPS-I

FamilyInfo: N/A

CasePresentingHPOs: N/A

CaseHPOFreeText: N/A

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: N/A

CaseUrineGAGs: N/A

CaseERT: N/A

CaseBMT: N/A

Variant1: c.898G>A (p.A300T)

Variant1ClinVarID: 11923

Variant1CAID: CA121772

Variant2: N/A

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished N/A

Case#: Male, first evaluated at 3.5 years, diagnostic studies described in paper at age 4.5 years, at time of report 11 years

DiseaseAssertion: Mucopolysaccharidosis Type I and Type II

FamilyInfo:Clinically normal sister, mother and father; parents denied consanguinity; extensive histocompatibility typing of all family members confirmed relationships and did not suggest consanguinity; Maternal uncle died at 11 years having "coarse facial features" but not diagnostic testing. Pedigree, Figure 7, page 82.

CasePresentingHPOs: HP:0000943 (dysostosis multiplex); HP:0000280 (course facial features)

CaseHPOFreeText: at 3.5 years "...gross motor delay, mild expressive language delay, and progressive changes in facial features and joints...noted to be a noisy breather and have a history of frequent ear infections...prominent metopic suture and facial features were said to be coarsened" Height 50th%, weight 95th%, head circumference >98th%. At 11 years of age reported to show progressive intellectual deterioration.

CaseNotHPOs:

CaseEnzymeAssay: Table 2 (page 79): leukocyte IDUA (alpha-L) activity absent (<1.0 nmol/mg/h), plasma IDUA alpha-L <0.20 MU/ml/h); plasma IDS activity was undetectable (0.0 U/mg/h)

CaseUrineAssay:Not reported

CaseERT:Don't know

CaseBMT:Don't know

Variant1:IDUA W402X

Variant1ClinVarID:11908

Variant1CAID:

Variant2: IDUA A300T

Variant2ClinVarID: 11923

Variant2CAID:

AdditionalVariants: IDS R468W (missense 1402C-->T), ClinVarID: 10497

ParentalGenoype:Mother, IDUA A300T and IDS R468W; Father, IDUA W402X

PreviouslyPublished: