A rare case of adult-onset vanishing white matter leukoencephalopathy with movement disorder, expressing homozygous EIF2B3 and PRKN pathogenic variants.

Background: Vanishing white matter disease (VWMD) is a rare autosomal recessive leukoencephalopathy. It is typified by a gradual loss of white matter in the brain and spinal cord, which results in impairments in vision and hearing, cerebellar ataxia, muscular weakness, stiffness, seizures, and dysarthria cogitative decline. Many reports involve minors. Very few instances worldwide have been reported, with adult onset of vanishing white matter considered to account for 15% of cases. Clinical evaluation, MRI results, and confirmatory genetic testing are used to diagnose VWMD.

Case presentation: A 39-year-old male from Hebron, Palestine, presented with a 7-month history of postural instability, imbalanced gait, and progressive deterioration of his lower extremities. Additionally, the patient suffered from ocular abnormalities and sphincteric issues. The patient's sibling showed comparable symptoms but was never diagnosed, as he passed away because of colon cancer. Reduced cognitive function, spastic quadriparesis, hyperreflexia, bradykinesia, and shuffling gait were found during a neurological examination. Normal results were obtained from routine laboratory tests, including cerebrospinal fluid (CSF), blood, and urine. Periventricular white matter hyperintensities, which are indicative of vanishing white matter leukoencephalopathy (VWML), were identified during an MRI. The diagnosis of adult-onset VWML with movement disability was substantiated by genetic testing, which named a homozygous pathogenic missense variant, EIF2B3, and a deletion in PRKN/PARK2. The patient's motor symptoms were temporarily alleviated following the administration of Levodopa/Carbidopa. Nevertheless, the long-term consequences are uncertain due to the illness's ongoing progression and the absence of a cure currently.

Conclusion: This instance of vanishing white matter leukoencephalopathy (VWML) is particularly remarkable in adults because of its rarity and complexity. The diagnosis is further complicated by the coexistence of Parkinsonism and VWML. Although a cure is not currently known. Early discovery is crucial to effectively manage symptoms. This example underscores the importance of more VWML research, particularly in Palestine, where studies on neurological disorders are limited. These findings underscore the importance of enhancing the region's diagnostic and therapeutic capabilities.