Preheat your oven to 350°F (175°C) and grease a 9x5 inch loaf pan.
In a large bowl, whisk together the flour, pumpkin pie spice, cinnamon, baking soda, and salt.
In a separate bowl, mix the whisked eggs, vegetable oil, 1 cup of sugar, vanilla extract, and pumpkin purée until well combined.
Gradually add the dry ingredients to the pumpkin mixture and stir until just combined, being careful not to overmix.
In a medium bowl, beat the cream cheese, 1/4 cup of sugar, and egg yolk until smooth.
Pour half of the pumpkin batter into the prepared loaf pan. Spread the cream cheese mixture over the batter, then top with the remaining pumpkin batter.
Use a knife to gently swirl the cream cheese mixture into the pumpkin batter, creating a marbled effect.
Bake in the preheated oven for 55 minutes, or until a toothpick inserted into the center comes out clean.
Allow the bread to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.