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Which of the following is true regarding homocysteinemia?
It is caused by a mutation in the 3' UTR of the cystathione β-synthetase gene
Acquired homocysteinemia can occur following deficiencies in vitamins B6, B12 and folic acid
A mutation within the cystathione β-synthetase gene results in decreased homocysteine metabolites and therefore decreased protein C synthesis
Defects within the cystathione β-synthetase gene result in fibrinogen which is more resistant to thrombin activation
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