ABSTRACT
To elucidate the host genetic loci affecting severity of SARS-CoV-2 infection, or Coronavirus disease 2019 (COVID-19), is an emerging issue in the face of the current devastating pandemic. Here, we report a genome-wide association study (GWAS) of COVID-19 in a Japanese population led by the Japan COVID-19 Task Force, as one of the initial discovery GWAS studies performed on a non-European population. Enrolling a total of 2,393 cases and 3,289 controls, we not only replicated previously reported COVID-19 risk variants (e.g., LZTFL1, FOXP4, ABO, and IFNAR2), but also found a variant on 5q35 (rs60200309-A at DOCK2) that was associated with severe COVID-19 in younger (<65 years of age) patients with a genome-wide significant p-value of 1.2 x 10-8 (odds ratio = 2.01, 95% confidence interval = 1.58-2.55). This risk allele was prevalent in East Asians, including Japanese (minor allele frequency [MAF] = 0.097), but rarely found in Europeans. Cross-population Mendelian randomization analysis made a causal inference of a number of complex human traits on COVID-19. In particular, obesity had a significant impact on severe COVID-19. The presence of the population-specific risk allele underscores the need of non-European studies of COVID-19 host genetics.
ABSTRACT
Spinal cord stimulation (SCS) has been reported to be effective for complex regional pain syndrome (CRPS). This is a case report of a patient with CRPS who was successfully treated with a combination of temporary SCS lead placement and physical therapy. A 19-year-old man presented with severe pain for a few months since receiving plaster cast fixation as treatment for an ankle sprain injury at the previous hospital. At his first visit to our pain center, he could not walk without crutches because of severe pain accompanied by symptoms such as allodynia, decreased skin temperature, redness, edema, muscle weakness, and changes in the appearance of the affected area. The symptoms met the diagnostic criteria for CRPS. Temporary SCS lead placement was performed to alleviate the pain and peripheral circulatory disorder, along with physiotherapy to improve the flexibility and restore the normal appearance of the affected limb. The interdisciplinary treatment effectively improved our patient's leg edema and walking ability, which consequently led to pain relief.
ABSTRACT
Spinal cord stimulation (SCS) has been reported to be effective for complex regional pain syndrome (CRPS). This is a case report of a patient with CRPS who was successfully treated with a combination of temporary SCS lead placement and physical therapy. A 19-year-old man presented with severe pain for a few months since receiving plaster cast fixation as treatment for an ankle sprain injury at the previous hospital. At his first visit to our pain center, he could not walk without crutches because of severe pain accompanied by symptoms such as allodynia, decreased skin temperature, redness, edema, muscle weakness, and changes in the appearance of the affected area. The symptoms met the diagnostic criteria for CRPS. Temporary SCS lead placement was performed to alleviate the pain and peripheral circulatory disorder, along with physiotherapy to improve the flexibility and restore the normal appearance of the affected limb. The interdisciplinary treatment effectively improved our patient's leg edema and walking ability, which consequently led to pain relief.