Case#: Pt 3, age is 18 months (proband can be found in Table 1)

DiseaseAssertion: Hurler syndrome, mucopolysaccharidosis type IH, MPS IH, MPS type I

FamilyInfo: No family information provided

CasePresentingHPOs:

CaseHPOFreeText:

CaseNotHPOs:

CaseNotHPOFreeText:

CaseEnzymeAssay: In methods it is stated that an IDUA activity assay was conducted on cartilaginous pellets generated from patient-derived bone marrow stromal cells at 5 weeks. However, results of the IDUA activity assays are not stated.

CaseUrineGAGs: "Significantly higher levels of GAGs in MPS IH compared with HD pellets at.1 week of chondrogenic differentiation, thus indicating that GAG accumulation in MPS IH can be seen during cell condensation and early differentiation stages." Total GAG content for each sample in ug GAG/ug DNA shown in Figure 4 graphs.

CaseERT: Don't know

CaseBMT: Don't know

Variant1: p.Q70X

Variant1ClinVarID:

Variant1CAID: PA3044620172

Variant2: p.P496R

Variant2ClinVarID: 496861

Variant2CAID: CA2802275

AdditionalVariants: No additional variants mentioned

ParentalGenotype: No parental information provided

PreviouslyPublished: No mention of previously being published