Item Title/Descriptions; How to interrupt if GUI is already there?

for _, v in pairs(ItemRooms) do
	local Peadastol = v.Pedastol
	Peadastol.Touched:Connect(function(p)
		if p.Parent:FindFirstChild("Humanoid") and DescCoolDown == false then
			DescCoolDown = true
			for _, x in pairs(v:GetDescendants()) do
				if x:IsA("Model") and game.ReplicatedStorage.Items:FindFirstChild(x.Name) then
					local GUI = script.DescGUI:Clone()
					local Desc = x:FindFirstChild("Description")
					local Player = game.Players:FindFirstChild(p.Parent.Name)
					GUI.Holder.Description.Text = Desc.Value
					GUI.Holder.Item.Text = x.Name
					GUI.Parent = Player.PlayerGui
					wait(5)
					GUI:Destroy()
					DescCoolDown = false
				end
			end
		end
	end)
end

So, I have this script that checks if you touch a pedestal, it takes the item name and description (within the item) and places a gui into you.

I am wondering how I would go about deleting the gui when you grab another item and the 1st gui isnt done showing you the item and description yet?

For example, you grab an item and it shows you the Item and description. Then, before the wait(5) is over you grab another item. I want it to Delete the old gui and make a new one so they dont overlap...

I had a few people help me out

Server Script

for _, v in pairs(ItemRooms) do
    local Pedestal = v.Pedestal

    Pedestal.Touched:Connect(function(p)
        if p.Parent:FindFirstChild("Humanoid") and DescCoolDown == false then
            DescCoolDown = true

            for _, x in pairs(v:GetDescendants()) do
                if x:IsA("Model") and game.ReplicatedStorage.Items:FindFirstChild(x.Name) then
                    local Player = game.Players:GetPlayerFromCharacter(p.Parent)
                    local Desc = x:FindFirstChild("Description")
                    local Rarity = x:FindFirstChild("Rarity")
                    local Item = x.Name
                    ItemGuiEvent:FireClient(Player, Item, Desc.Value, Rarity.Value)
                end
            end

            DescCoolDown = false
        end
    end)
end

Local Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local Event = ReplicatedStorage.RemoteEvents.ItemGuiEvent
local CurrentItem = nil

local function InvokeGUI(Item, Desc, Rarity)
	if CurrentItem == Item then return end
	CurrentItem = Item
	script.Parent.Holder.RareIndex.Text = Rarity
	script.Parent.Holder.Item.Text = Item
	script.Parent.Holder.Description.Text = Desc
	script.Parent.Holder.Visible = true
	wait(3)
	if CurrentItem == Item then
		script.Parent.Holder.Visible = false
		CurrentItem = nil
	end
end

Event.OnClientEvent:Connect(InvokeGUI)