Audrey Harding — Medical Synopsis

Prepared for Cleveland Clinic Consultation

Current Status

Immune Picture

Positive ANA (no autoimmune disease identified)No autoimmune dx
Low-titer positive ANA — 1:80, nuclear speckled pattern (10/14/25). The full specific antibody panel (SSA/SSB, Smith, U1-RNP, ribosomal RNP, chromatin, centromere, Scl-70, Jo-1) is negative (6/17/26), the urine protein/creatinine ratio is normal, and hand/sacroiliac imaging is normal. A low-titer nonspecific ANA with no specific antibody and no end-organ finding is common in hEDS and does not establish an autoimmune disease

Completed Rheumatology Workup

Rheumatology — Classic Autoimmune Disease Excluded

A low-titer positive ANA (1:80, nuclear speckled) prompted a full rheumatologic evaluation. The specific antibody panel, urine studies, and imaging are uniformly negative — there is no defined autoimmune or inflammatory disease, and her joint pain is mechanical hEDS hypermobility, not inflammatory arthritis.

Specific Antibody Panel, Urine & Imaging — All Negative (6/17/26)

Lupus / Sjögren's / scleroderma / myositis / MCTD (antibody panel)No specific autoantibody
Anti-SSA (Ro), anti-SSB (La), Smith (Sm), U1-RNP, ribosomal RNP, chromatin, anti-centromere, scleroderma (Scl-70) IgG, and Jo-1 antibodies — all negative despite a positive ANA. Negative Smith and negative ribosomal RNP are especially meaningful, as both are highly specific for lupus
Lupus nephritis / renal involvementNormal
Urine protein/creatinine ratio 0.07 — normal (well below the 0.2 threshold); no proteinuria (6/17/26)
Inflammatory / erosive arthritisNegative
Bilateral hand X-rays (3-view) — no acute bony abnormality and no evidence of inflammatory arthropathy (6/17/26)
Axial spondyloarthritis / sacroiliitisNormal
Sacroiliac joint X-rays (AP pelvis / Ferguson) — normal (6/17/26)

Bottom line: there is no classic systemic autoimmune disease here, and the joint pain is mechanical hEDS hypermobility, not inflammatory arthritis — a low-titer nonspecific ANA is common in hEDS. Separately, and on the strength of her symptom pattern rather than this negative panel, MCAS remains worth evaluating (it co-occurs with hEDS) — the hypothesis below.

Still to Evaluate

MCAS — Mast Cell Activation Syndrome

Mast Cell Activation Syndrome co-occurs with hEDS at rates far beyond coincidence and would fit her broader picture — inconsistent GI symptoms, unpredictable food reactions, and immune dysregulation. It is worth evaluating on those symptom grounds (independent of the nonspecific positive ANA). Standard allergy panels will miss it. Request an allergist/immunologist with specific MCAS experience.

Specific Labs Required for MCAS Workup

  • Serum tryptase — baseline and ideally during a symptomatic episode
  • 24-hour urine prostaglandins (PGD2, PGF2-alpha)
  • 24-hour urine N-methylhistamine
  • Chromogranin A

Action Items

Immune Requests for Cleveland Clinic

Specialist Consults to Request

  • Allergy/Immunology — MCAS-experienced provider; request the specific MCAS panel above (standard allergy panels will miss it)

Key Questions

  • With classic autoimmune disease now excluded, and given her hEDS and symptom pattern, has MCAS been evaluated with serum tryptase, 24-hour urine prostaglandins, and N-methylhistamine?