**Core Concept**
Netheon Syndrome, also known as Antiphospholipid Syndrome (APS), is an autoimmune disorder characterized by the presence of antiphospholipid antibodies, leading to thrombosis and other clinical manifestations. The syndrome involves the formation of autoantibodies against phospholipid-binding proteins, such as beta-2 glycoprotein I.

**Why the Correct Answer is Right**
The correct answer is the option that does not describe a feature of APS. The syndrome is characterized by **recurrent venous or arterial thrombosis**, **pregnancy-related complications**, and **thrombocytopenia**. These manifestations occur due to the activation of the coagulation cascade and the inhibition of protein C and protein S.

**Why Each Wrong Option is Incorrect**
**Option A:** Recurrent venous or arterial thrombosis is a hallmark of APS, making this option incorrect as it is a feature of the syndrome.

**Option B:** Pregnancy-related complications, such as recurrent miscarriage and fetal loss, are also a feature of APS, making this option incorrect.

**Option C:** Thrombocytopenia, which is characterized by low platelet count, is a feature of APS, making this option incorrect.

**Option D:** This option is the correct answer, as it is not a feature of APS.

**Clinical Pearl / High-Yield Fact**
APS can be triggered by infections, medications, and other autoimmune disorders, and it is essential to diagnose and treat the underlying condition to prevent thrombotic complications.

**Correct Answer: D.