```json
{"claims": [
  {"claim": "Marfan syndrome is an autosomal dominant disorder.",
   "quote": "Marfan syndrome is an autosomal dominant disorder",
   "subject": "Marfan syndrome",
   "predicate": "is an autosomal dominant disorder",
   "object": null,
   "negated": false,
   "qualifier": null,
   "subject_qualifier": null,
   "object_qualifier": null,
   "entities": ["Marfan syndrome"],
   "citations": ["[1]"],
   "about": "domain",
   "basis": "secondary_source"},
  {"claim": "Marfan syndrome is caused by pathogenic variants in FBN1.",
   "quote": "caused by pathogenic variants in **FBN1**",
   "subject": "Marfan syndrome",
   "predicate": "is caused by pathogenic variants in",
   "object": "FBN1",
   "negated": false,
   "qualifier": null,
   "subject_qualifier": null,
   "object_qualifier": null,
   "entities": ["Marfan syndrome", "FBN1"],
   "citations": ["[1]"],
   "about": "domain",
   "basis": "secondary_source"},
  {"claim": "Marfan syndrome is not caused by variants in TGFBR2.",
   "quote": "It is not caused by variants in *TGFBR2*",
   "subject": "Marfan syndrome",
   "predicate": "is caused by variants in",
   "object": "TGFBR2",
   "negated": true,
   "qualifier": null,
   "subject_qualifier": null,
   "object_qualifier": null,
   "entities": ["Marfan syndrome", "TGFBR2"],
   "citations": ["[2]"],
   "about": "domain",
   "basis": "secondary_source"},
  {"claim": "Variants in TGFBR2 cause Loeys-Dietz syndrome.",
   "quote": "which instead cause Loeys-Dietz syndrome",
   "subject": "TGFBR2",
   "predicate": "variants cause",
   "object": "Loeys-Dietz syndrome",
   "negated": false,
   "qualifier": null,
   "subject_qualifier": null,
   "object_qualifier": null,
   "entities": ["TGFBR2", "Loeys-Dietz syndrome"],
   "citations": ["[2]"],
   "about": "domain",
   "basis": "secondary_source"}
]}
```