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: S260F

Variant1ClinVarID:

Variant1CAID: CA355962251

Variant2: N/A

Variant2ClinVarID: N/A

Variant2CAID: N/A

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished: N/A

Case#: Patient 51, 2 years old (age at report), female, Indian

DiseaseAssertion: MPS1-H

FamilyInfo: N/A

CasePresentingHPOs: Coarse facial features, hepatosplenomegaly, joint contractures, dysostosis multiplex (HP:0000280, HP:0001433, HP:0002828, HP:0000943)

CaseHPOFreeText: Cardiac disease

CaseNotHPOs: N/A

CaseNotHPOFreeText: N/A

CaseEnzymeAssay: 2.4% (Range of residual enzyme activity: 0.0%-4.8%)

CaseUrineGAGs: N/A

CaseERT: N/A

CaseBMT: N/A

Variant1: c.265G>C in the article - incorrect variant but unknown what the correct nomenclature is. Could be c.265C>G (p.Arg89Gly) or c.266G>C (p.Arg89Pro)

Variant1ClinVarID: N/A

Variant1CAID: N/A

Variant2: c.779C>T (p.Ser260Phe)

Variant2ClinVarID: 3895951

Variant2CAID: CA355962251

AdditionalVariants: N/A

ParentalGenotype: N/A

PreviouslyPublished N/A