Case#: OS of sibship 4, male, 3.6 years old (age at diagnosis), 5.5 years old (age at ERT enrollment), 3.5 years (duration of ERT)

DiseaseAssertion: MPS1-HS

FamilyInfo: Affected male YS (YS of sibship 4)

CasePresentingHPOs: HP:0007957, HP:0000943, HP:0002828, HP:0001263 (Corneal opacity, dysostosis, joint contractures, cognitive delays)

CaseHPOFreeText: Cardiac disease (developed after T1), progression of respiratory symptoms

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: N/A

CaseUrineGAGs: N/A

CaseERT: Yes - Had poor compliance (~60 %) with ERT, which may have impacted the symptom progression.

CaseBMT: N/A

Variant1: c.623G>A (p.G208D)

Variant1ClinVarID: 554590

Variant1CAID: CA355961948

Variant2: (p.P520R), Typo, no proline at this position

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished N/A

Case#: YS of sibship 4, male, 0.8 years old (age at diagnosis), 1.3 years old (age at ERT enrollment), 3.6 years (duration of ERT)

DiseaseAssertion: MPS1-HS

FamilyInfo: Affected male OS (OS of sibship 4)

CasePresentingHPOs: HP:0007957, HP:0000943, HP:0002828 (Corneal opacity, dysostosis, joint contractures)

CaseHPOFreeText: Cardiac disease, progression of respiratory symptoms

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: N/A

CaseUrineGAGs: N/A

CaseERT: Yes - Had poor compliance (~60 %) with ERT, which may have impacted the symptom progression.

CaseBMT: N/A

Variant1: c.623G>A (p.G208D)

Variant1ClinVarID: 554590

Variant1CAID: CA355961948

Variant2: (p.P520R), Typo, no proline at this position

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished N/A

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: G208D

Variant1ClinVarID: 554590

Variant1CAID: CA355961948

Variant2: N/A

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished: N/A